Answer:
Each gamete contains a single copy of every chromosome contains one allele for every gene. There for, each allele for a givin gene is packaged into a separate gamete. For example: a fly with the genotype Bb will produce two types of gametes:B and b
• What does the Human Genome Project decode?
• How is that code represented?
• What has the project revealed about the differences between humans and bananas?
• What questions does the Human Genome Project raise for you?
• What are outliers, and what is their value in understanding disease?
• How can a genetic mutation be advantageous?
• How is the knowledge of mutations being used to combat the HIV virus?
In this activity, students learn about the Human Genome Project. They do an interactive Web activity which simulates the process scientists use to determine the sequence of chromosomal DNA bases. Then they learn how two teams of scientists raced to decode the human genome. Next they explore a stretch of sequenced DNA on the Web to learn about the function of different sections of DNA code. They learn how knowledge of the human genome is being applied to medicine. They also learn about genetic variation among humans and between humans and other species. Finally, they assess what they have learned about the Human Genome Project by playing a game of Jeopardy.
Objectives
Learn about the purpose and work of the Human Genome Project
Describe the process of sequencing human DNA
Understand the functions of different stretches of code on a chromosome
Recognize the similarity in the genetic code among humans and between humans and other species
Learn how the Human Genome Project can contribute to curing diseases
Suggested Time
1-2 class periods
Multimedia Resources
Human Genome Project QuickTime Video
Sequence for Yourself Flash Interactive
The Sequencing Race Begins QuickTime Video
Explore a Stretch of Code Shockwave Interactive
HIV Immunity QuickTime Video
Genetic Variation QuickTime Video
Genome Facts HTML Document
Jeopardy Game Show PDF Document
Extract Human DNA from Cheek Cells HTML Document
Use these resources to create a simple assessment or video-based assignment with the Lesson Builder tool on PBS LearningMedia.
Materials
Jeopardy Game Show (PDF) review
Before the Lesson
Review the concepts of and relationships between DNA, genes, proteins, chromosomes, and traits.
After the Lesson
Do a wet lab in which students extract their own DNA from a cheek cell (see Extract Human DNA from Cheek Cells activity).
The Lesson
Part I
1. Show the Human Genome Project video. Discuss the following:
What does the Human Genome Project decode?
How is that code represented?
What has the project revealed about the differences between humans and bananas?
What questions does the Human Genome Project raise for you?
2. Now have students explore the DNA sequencing process by doing the Web activity Sequence for Yourself. Use the following questions to elicit student responses, either in writing or as part of a whole-class discussion:
Why does the DNA have to be cut into pieces? How is this done?
How are DNA copies made in the lab?
How do primers and special fluorescent nucleotides help determine the DNA sequences?
How does the overlapping of DNA segments allow the entire sequence of a DNA molecule to be read?
3. Show video The Sequencing Race Begins. Ask:
What is the process for sequencing the human genome?
How has the way scientists read the genetic code changed in recent years?
Why is the map of the human genome considered only the beginning of the Human Genome Project?
4. Have students Explore a Stretch of Code and take notes as they do it. Then ask the following and discuss as a class:
What does the majority of the DNA in chromosomes code for?
What is the role of gene promoters like TATA boxes?
How does the "machinery" of the cell know where to begin reading the gene?
What are exons, and what is their function in the chromosomes?
What are introns, and what do they do? What happens to them when DNA is transcribed into mRNA?
What are the roles of "hitchhiking" and ancient code in human DNA, and where did they come from?
How alike is the DNA from two different humans?
What is a gene, and what role do genes play in the human body?
5. Show the video HIV Immunity to examine some of the benefits of mapping the human genome. Ask:
What are outliers, and what is their value in understanding disease?
How can a genetic mutation be advantageous?
How is the knowledge of mutations being used to combat the HIV virus?
6. Show the video Genetic Variation and discuss the following:
Whose genes are being sequenced in the two human genome projects?
Are these genes representative of the human species? Why or why not?
What is the percentage of genetic difference between any two humans?
What does the similarity of basic functions between different organisms indicate?
7. Finally, have students read the Genome Facts document. Have students use these facts and what they have learned about the Human Genome Project to create a series of answers and questions for a Jeopardy quiz show. (
4. Which of the following factors determines the sex of an offspring, specifically in humans?
A) genes on the X chromosome only
B) the number or chromosomes
C) presence or absence of a Y chromosome
D) genes within the chromosomes
What do we know about cells?
O cells are nonliving
O cells grow rapidly
O cells are made from plasm
O all cells come from other prexisting cells
Answer:
all cells come from preexisting cells
Answer:
cells come from pre existing cells
More than 90% of measles infections occurs in children under ____ years old.
Answer: More than 90% of measles infections occurs in children under 15 years old.
Hope this helps
Organisms combine glucose and oxygen in order to release energy in what process?
what is the inter relation among work energy and power
Answer:
Power is the rate of using energy or doing work. Energy is measuredin Joules. Power is measured in Joules per second or Watts. Work can be defined as transfer of energy. In physics we say that work is done on an object when you transfer energy to that object
DNA is responsible for making a cell¨s what?
Answer:
The answer is in the explanation bellow
Explanation:
the major function of DNA is to encode the sequence of amino acid residues in proteins, using the genetic code. To read the genetic code, cells make a copy of a stretch of DNA in the nucleic acid RNA.
Describe the amount of sunlight at the poled and at the equator throughout various times of the year. Why does this occur?
Answer:
Neither of the poles are tilted towards the sun. Hence, the sun rays fall directly on the equator due to which all the places on the Earth experience equal daylight hours and equal night time hours that is, 12 hours of day and 12 hours of night on all the places of the Earth.
Answer:
The fact that the equatorial Sun is always so close to the zenith at solar noon explains why the tropical zone contains the warmest regions on the planet overall. Additionally, the Equator sees the shortest sunrise or sunset because the Sun's path across the sky is so nearly perpendicular to the horizon.
Explanation:
i think this might help
In which phase of mitosis do chromosomes attach to the spindle fibers, lining up in the middle of the cell?
Answer:
Metaphase
Chromosomes line up at the metaphase plate, under tension from the mitotic spindle
Explanation:
utdkk6tsk6s5j6srxhxtdruyryu56r
Nerve cells release neurotransmitters across gaps and secretion of proteins and wastes:
Facilitated Diffusion
Endocytosis
Diffusion
Exocytosis
Embryology
Define:
Use it in a sentence:
Answer:
Scientists can use embryology to determine that many organisms have common ancestors.
Explanation:
Why do you think that living and non living things depend on each other in order to survive?
Explanation:
You depend on each other and need the nonliving things in your home, like food, water, air, and furniture. Living things need nonliving things to survive. ... They are food for many animals. Plants use water from the soil, carbon dioxide from the air, and energy from sunlight to make their own food.
Answer:
Organisms depend on other organisms and on the nonliving things in an ecosystem to meet their basic needs for food, water and protection. ... Plants use energy from the sun to produce their own food from air and water. The type of soil, amount of water and temperature range in an area determine the plants that grow there.
Which of the following correctly shows the sequence of protein synthesis?
a. DNA -> protein -> RNA
b. RNA -> DNA -> protein
c. Protein -> RNA -> DNA
d. DNA -> RNA -> protein
Answer:
D
Explanation:
*too lazy to write the explanation*
What are three tasks that DNA must be able to perform in all organisms? Select three answer choices.
A. It must store genetic information.
B. It must discard foreign genes.
C. It must instruct cells to produce needed molecules.
D. It must copy itself.
E. It must move to locations throughout the cell.
Answer:
A. It must store genetic information.
C. It must instruct cells to produce needed molecules.
D. It must copy itself.
Explanation:
Deoxyribonucleic acid, commonly known as DNA, is the genetic material found in virtually all living organisms. It is the biological molecule that holds the genetic instructions needed for the synthesis of useful products (proteins).
DNA molecule must be able to perform the following tasks in a living organism to be considered the genetic material:
- It must store genetic information: DNA is the storage molecule for genetic information in living cells.
- It must instruct cells to produce needed molecules: DNA must be able to undergo gene expression where it directs the synthesis of the needed molecules like proteins, which it encodes.
- It must copy itself: DNA must be capable of replication i.e. must be able to produce two identical copies of itself.
Answer:
A. It must store genetic information.
C. It must instruct cells to produce needed molecules.
D. It must copy itself.
Carbon dioxide is released when which of the following phenomena occur?
precipitation
photosynthesis
burning fossil fuels
nitrogen fixation
Answer:
burning fossil fuels
Explanation:
The lymphatic system serves which purpose?
Answer:
One of the lymphatic system's primary jobs is to collect excess fluid (particularly lymph fluid) surrounding the body's tissues and organs and return it to the bloodstream.
Explanation:
If the lymphatic system didn't drain excess fluid from the tissues, the lymph fluid would build up in the body and cause swelling. hope this helps!
Blight is a plant disease caused by a fungus that affects potato plants. Scientists are tying to develop a breed of potato plants that are resistant to blight. The development of blight-resistant potato breed might be good for the environment because the new potato breed will need
A. Less water
B. Less fertilizer
C. Less fungicide
D. Less field space
Answer lil durk a goat LLKV
Explanation:
When there is little water in its habitat, the walking catfish can use its pectoral fins to move on land. Which of these will MOST LIKELY happen to a population of walking catfish if over millions of years all surrounding water dries up?
A. The population is likely to evolve to have weaker pectoral fins.
B.
The population is likely to evolve to have stronger pectoral fins.
C.
Walking catfish with stronger pectoral fins and those with weaker pectoral fins will both become extinct.
D.
Walking catfish with stronger pectoral fins and those with weaker pectoral fins will both survive, so evolution is unlikely to occur.
Answer:
B
Explanation:
its maybe the most common sense
What are all the organisms that perform cellular respiration?
Answer:
All the organism that performs cellular respiration is Oxygen is required for cellular respiration and is used to break down nutrients, like sugar, to generate ATP (energy) and carbon dioxide and water (waste). Organisms from all kingdoms of life, including bacteria, archaea, plants, protists, animals, and fungi, can use cellular respiration.
please help!!!
Explain how similar and different sexual reproduction in plants and animals is?
Plant's reproduce via. pollen or seeds, whilst the animals reproduce by, and I quote, "getting on top of each other to have a fun time". Hope that helped
Answer:
Both plants and animals reproduce sexually, producing a male and female gamete, which fuse to form a zygote. However, plants are also able to reproduce asexually, unlike most animals. In sexual reproduction in animals, the two gametes are the spermatozoa and the oocyte, which when fused become the ovum.
Explanation:
Where is the mRNA made?
Answer: mRNA is made in the nucleus
Explanation:
what do you think is the most important scientific discovery we humans have made?
Answer:
THE MOON
Explanation:
you did not give a time era
Mineral ions are required in the human diet in small quantities. State the mineral ion required for each process: a) making bone b) making haemoglobin
Answer:
a) making bone - Calcium
b) making hemoglobin - Iron
Explanation:
Mineral ions are defined as the charged forms of minerals which are required in small amount in human body but are essential otherwise leads to deficiency symptoms.
Making bone and making hemoglobin both require mineral ion. Making bone require calcium ion, as it maintain the bone mass and strengthen the bones. hemoglobin formation require iron ion, as iron helps to oxygenate our blood cells.
Hence, the correct answer is "a) making bone - Calcium
b) making hemoglobin - Iron".
Two biological processes that occur in certain organelles are represented in the diagrams below.
**Which statement is correct regarding the types of organisms able to carry out these processes?
a. Process X occurs in heterotrophs, but not in autotrophs.
b. Process Y occurs in consumers, but not in producers.
c. Both processes X and Y occur in all living things.
d. Both processes X and Y occur in green plants.
Answer:
A
Algebra For what values of the variables must ABCD be a parallelogram?
B
23. A 2y + 2 B 24. B
(3x + 10)
(8x + 5)º
3x + 6
54°
D
С
D
A
Зу - 9 с
ly+4
Answer: The answer is D :)
Explanation:
Why does asexual reproduction result in offspring with identical genetic variation? Use the examples that you studied earlier in this lesson to support your answer.
Answer:
The reason asexual reproduction results in identical offspring is because the DNA is replicated exactly from the parent to the daughter. One example is bacteria.
Explanation:
Answer:
Sexual reproduction results in offspring with genetic variation due to the multiplication brings about limitless prospects of hereditary variety. The examples, that can be studied to support this would be at the end of the day, sexual generation brings about posterity that are hereditarily extraordinary. They vary from the two guardians and furthermore from one another. This happens for various reasons.
Explanation:
PLEASE MARK ME AS BRAINLIEST
Which statement is true about levels of organization for living things
A .organisms that are in the same kingdom are always in the same order
B. Organisms of the same species are always in the same class
C. Organisms that are in the same phylum have more in common Then organisms in the same order
D. Organisms that are in the same family have more in common than organisms in the same genius
Answer:
B and D are true
Explanation:
Kingdom - Phylum - Order - Class - Genus - Family - Species
Please help me with this drawing contour lines. I will mark your brainlist if you answer it correctly.
Explanation: Use these images to find the borderlines and to understand what they are.
BRAINLIST PLS!
Grazing is a method of feeding in which herbivores, such as sheep, feed on plants. The intensity in which the herbivores in an ecosystem graze impacts the biodiversity of the plants in that ecosystem, as shown in the graph below.
According to the graph, biodiversity is low during low grazing intensities. This is because only a few species of plants are able to outcompete the others and dominate the ecosystem. As the grazing intensity increases, the biodiversity increases because the dominant plant species are kept in check by the grazers. This allows the weaker competitors to grow. At very high grazing intensities the biodiversity decreases because only plants with adaptations to tolerate the effects of grazing are able to survive.
Which of the following best explains how plant biodiversity would change if all of the grazers were suddenly removed from an ecosystem experiencing high intensity grazing?
A.
Plant biodiversity would likely decrease because every species of plant could grow without limitation after the herbivores were removed.
B.
Plant biodiversity would likely increase because removing one population from an ecosystem would allow more resources for all the others.
C.
Plant biodiversity would likely decrease because a few of the more dominant plant species would outcompete all the others.
D.
Plant biodiversity would likely increase because only a few of the remaining plant species would be able to thrive without the herbivores.
Answer:
I believe the answer is B , it should be .
Explanation:
Answer:
Plant biodiversity would likely decrease because a few of the more dominant plant species would outcompete all the others.
Explanation:
Describe the energy transformations that exist on earth and in your daily life. Describe at least 3 factors and why each one is important. 40 POINTS
Answer:
Energy is the fundamental need of our everyday life. ... This means that we can convert electrical energy into heat energy and light energy, solar energy can be converted to chemical energy, potential energy can be converted into kinetic energy, Gravitational potential energy can be converted into kinetic energy etc.
Explanation:
The Sun transforms nuclear energy into heat and light energy.
Our bodies convert chemical energy in our food into mechanical energy for us to move.
An electric fan transforms electrical energy into kinetic energy.
how would you describe what the cells of each stage of the cycle look like ? what are the visible features of the cells.
Interphase, Prophase, Metaphase, Anaphase, Telophase, and Cytokinesis
Interphase:
Is known as the resting stage. Replication of DNA occurs.
- G1
-S
-G2
Prophase:
The chromosomes are visible, centrioles are formed and begin to move to opposite sides. This is where you see the dissolving of the nuclear membrane.
Metaphase:
The chromosomes line up in the centre of the cell.
Anaphase:
This when the cell divides (should look like two circles splitting) you will see the spindles begin to shorten which pull chromatids apart.
Telophase:
The nuclear membrane is reformed.
Hope this helps (:
Please rate thanks !