The probability that neither of them is a heavy smoker is 0.53 or 53%
What is genetic probability?Probability serves to mathematically estimate the possibility of events that happen by chance, that is, as a matter of luck.
In this case:
Probability that selected one is heavy smoker is:
p=270/1000=0.27
Number of individuals selected is 2 and We know that:
P(X=x)=nc_x(1-p)^{n-x}(p)^x
We need to prove that X=0:
P(X=0)=nc_0(1-0.27)^{2-0}(0.27)^0
P=0.5329
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water is a renewable resource that is constantly generated through the water cycle . in what areas might the water cycle be most limited ?
A) Canada .
B) south Africa .
C) south America .
D) Northern Africa .
Why bacteria generally dies in the presence of oxygen ?
Bacteria that require oxygen to grow are called "obligate aerobic bacteria". Without oxygen they generally die since these bacteria require oxygen to grow.
Their methods of energy production and respiration depend on the transfer of electrons to oxygen.
What kind of mutation would occur if a sequence of DNA is changed from ATCGGCTTAACG to ATCGGCTAAACG?
Answer:
Base substitution mutation
Explanation:
Mutation is the alteration or change that occurs to the sequence of a gene caused by a mutagen (chemicals) or spontaneously-induced. Depending on how the mutation occurs, it is of different types. The mutation shown in this question is as follows:
ATCGGCTTAACG to ATCGGCTAAACG
This type of mutation is called SUBSTITUTION MUTATION. Substitution mutation is a type of mutation that involves the replacement of one or more nucleotide base by another. In this original sequence; ATCGGCTTAACG, the eight base T was replaced by base A in the sequence, hence, it is a substitution mutation.
What is an example of elastic potential energy?
a. stretching a rubber band
b. apple falling from a tree
c. A dog lying on the floor
d. throwing a ball
Answer:
a.stretching a rubber band
Answer:
An example of elastic potential energy is
A. stretching a rubber band.
Hope it will help :)
How is energy stored when ADP is converted to ATP?
Answer:
Energy is stored in the bonds between the phosphate groups (PO4-) of the ATP molecule. When ATP is broken down into ADP (adenosine diphosphate) and inorganic phosphate, energy is released. When ADP and inorganic phosphate are joined to form ATP, energy is stored.
Explanation:
Hope this helped Mark BRAINLEST!!
The gecko is a reptile that has the amazing ability to climb smooth surfaces - even glass. Recent discoveries indicate that geckos stick to smooth surfaces via van der Waals interactions between septae on their feet and the smooth surface. When not selling car insurance, geckos climb smooth surfaces.
a. How is this method of stickiness advantageous to the gecko over covalent interactions?
b. Given that van der Waals forces are among the weakest molecular interactions, how can the gecko's feet stick so effectively?
Answer:
a) This method of stickiness is advantageous over covalent interactions because it is weak and easily reversible.
b) The feet are equipped with millions of septae which collectively produce a synergistic effect that produces a powerful adhesive effect.
Explanation:
Geckos have their feet studded with tiny hair-like substances called septae, and these substances interact with the surfaces on which the Gecko climbs using weak van der Waals forces to produce stickiness.
a) The van der Waals interactions for the purpose of climbing is of more advantage over the covalent method of interaction because climbing involves a repetitive action of adhesion to the surface and destruction of such adhesion, and this involves the creation and the breaking of the bonds between the two surfaces easily. van der Waals forces being easily broken helps to achieve effective climbing. If the method of interaction is with a comparatively strong bond, the speed of creation and destruction of such bond is reduced, and the effectiveness of climbing is reduced.
b) Although van der Waals forces are weak forces, each foot of the wall Gecko has millions of septae that each create a van der Waals interaction, and the collective interactions produce a powerful adhesion causing the feet to stick effectively.
why is the moon invisible from earth during a new moon science
Answer:
Explanation:
During the New Moon the far side of the Moon is illuminated by the Sun, while the side that faces the Earth lies in darkness so the Moon is invisible. As the Moon follows its path from the New Moon position more and more of the Earth-facing side becomes illuminated resulting in the “waxing” phases.
A sound wave that occurs at a quick rate and has a high frequency would produce
A
a loud sound.
B
a low-pitched sound.
C
a high-pitched sound.
D
a soft sound.
Answer:
C. a high-pitched sound
Explanation:
2. All living things are made of cells.
True
False
Answer:
true
Explanation:
WE ARE MADE OF CELLSSSSSSS AND EVERYTHING THAT IS LIVING DOES TOO
Which event occurred during the Mesozoic era?
Cyanobacteria filled the water and air with oxygen.
Early humans began to make tools, harvest plants, and make cave paintings.
Pangaea began to break apart into many continents separated by shallow seas.
Pangaea, the super continent, was formed.
Answer:
Pangea began to break apart.
Explanation:
Humans wouldn't exist for millions more years. Pangea existed before the Mezoic, and the Cyanobacteria doesn't make sense. (Not an expert though.
Why is it important for others to believe in science
Answer:
because science is one of the most important channels of knowledge
Explanation:
because of science you can create a new knowledge, improving education, and increasing the quality of our lives.
I hope it can help.
which of the following is the most complex
according to their cellular level of organization? A.
Hair B. Euglena C. Hydra D.Heart. bplease give explanations.
d.corazon.ya que sin el no habria vida
The smallest unit that can carry on all the processes of life is a
The smallest unit that can carry on all the processes of life is a cell.
Answer:
Cell
Explanation:
Cell is the basic unit of life processes
what is the name of these compound based on IUPAC nomenclature?
Explanation:
plz mark my answer as brainlist you find it useful.
hope this will be helpful to you.
Answer:
Required answer in the attachmentClub foot is one of the most common congenital skeletal abnormalities, with a world-wide incidence of about 1 in 1000 births. Both genetic and nongenetic factors are thought to be responsible for club foot. C.A. Gurnett et al. identified a family in which club foot was inherited as an autosomal dominant trait with reduced penetrance. They discovered a mutation in the PITXI gene that caused club foot in this family. Through DNA testing, they determined that 11 people in the family carried the PITXI mutation, but only 8 of these people had club foot. What is the penetrance of the PITXI mutation in this family
Answer:
0.727
Explanation:
Penetrance can be defined as a measure of the association between a genotype and phenotype. In medical genetics, the penetrance of a mutation leading to the disease state is the proportion of individuals carrying the mutation and showing disease symptoms associated with such mutation. For example, if a mutation leading to the disease state has a 90% of penetrance, it is expected that 9 of each 10 individuals carrying the mutation will develop the disease, while the remaining 10% will not develop the disease. In this case, 8 of each 11 individuals carrying the PITXI mutation show symptoms compatible with the disease, and therefore the penetrance is 8/11 = 0.727 (73%).
Rattlesnake Species
100
Average Length (cm)
8 8 8 8 8 8 8 %
60
Mojave
Massasauga
Western
Diamondback
O
Black-tailed
1. Which type of information about rattlesnakes
does the bar graph above show? SCIL15.2
adaptation
evolution
mimicry
variation
I needdd helpppp plssss
Answer:
cool
Explanation:
this is easy I am not going to waist a lot of time but I will give you a cool video to watch in you tube
My main goal is to produce ATP energy
Answer:
mitochondria is my name
Explanation:
Genomic imprinting may involve a single gene, a part of a chromosome, or a whole chromosome. Indicate if the following statements are true or false regarding this phenomenon
1. Genomic imprinting is permanent in the somatic cells of a given individual. _____________
2. Genomic imprinting is permanent and affects future generations. ____________
3. Methylation is the chemical change underlying genomic imprinting. _____________
4. If a gene is imprinted, the offspring can express both the maternal and paternal allele. _________
Answer:
1. True.
2. False.
3. True.
4. False.
Explanation:
A genome can be defined as the complete set of hereditary instructions that is typically found in the deoxyribonucleic acid (DNA).
Genome imprinting can be defined as an epigenetic biological process in which a genomic domain or genes of a living organism is marked biochemically with information that is related to parental origin. Thus, it is a non-Mendelian inheritance i.e genome imprinting is typically independent of Mendelian inheritance.
1. True: Genomic imprinting is permanent in the somatic cells of a given individual.
2. False: Genomic imprinting is permanent and affects future generations. It does not affect future generations because generally it is expressed in a parent of origin specific form.
3. True: Methylation is the chemical change underlying genomic imprinting.
4. False: If a gene is imprinted, the offspring can express both the maternal and paternal allele. It is independent of Mendelian inheritance.
What are CD4 cells?
a. T-cells that have a CD4 receptor
b. B-cells that have a glycoprotein receptor
c. HIV antigens
d. red blood cells
Answer:
I'm pretty sure it is b because CD4 cells are the cells that are a glycoprotein
Explanation:
all life would come to an end if there are no green plants.
Explain
Answer:
So if there were no green plants, no food will be available for the other living organisms. ... During respiration, organisms use this oxygen for releasing energy. Without these 2 important aspects of food and oxygen, it would be difficult for life to survive on earth.
Explanation:
Sickle-cell anemia is an inherited disease that affects red blood cells. In people who have this disease, one amino acid is substituted for another amino acid in a blood protein. What causes sickle-cell anemia?
A. Mutation
B. Replication
C. Translation
D. Transcription
Question 2 of 10
Psychological perspectives exist:
O A. to address the physical properties of the brain.
B. to explain the science of behavior.
C. so that there can be different ways of looking at psychological
questions.
O D. to enforce one particular way of looking at problems.
Answer:The correct option is B.
to explain the science of behavior.
Explanation:
This is because psychology perspective is the study of the science of cognitive behavioral. It entails the behaviors of humans both conciously and unconsciously. This perspective deals with the properties of brain. It deals with human ways of thinking, mind and behavior. Therefore it is the science of human behaviors.
What is the correct order of the cell organization after cellular differentiation
Answer:
The cell organization hierarchy consists of (in order): cells ⇒ tissues ⇒ organs ⇒ organ systems ⇒ organisms.
Explanation:
compare and contrast nutrition in a guava plant and Rhizopus fungus
Simple organisms usually make exact copies of themselves when they reproduce. What do we call this type of reproduction?
Answer:
asexual reproduction.
the structure labeled A in the figure below is called the
Answer:
Centromere
Explanation:
Connects sister chromatids
The structure labelled A in the figure is a centromere.
What is a centromere?The centromere is a region of the chromosome that is constricted. The centromere plays an important role in the division of cells during both the processes of mitosis and meiosis.
The centromere is simply the region of the chromosome where the spindle fibres attach. Therefore, when the spindle fibres attach to the centromere, they pull the sister chromatics in the opposite directions of the cell during cell division.
Thus, at the end of the cell division, each of the daughter cells gets one-half of the chromosome containing identical DNA. The centromere is thought to be the middle region of the chromosome, even though it is often not in the middle. It is simply the region where the chromosomes are most constricted
The centromere separates the chromosome into the P arm and the Q arm. These are simply the names given to the short arm and the long arm of the human chromosome respectively.
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answer the correct answers to this assignment.
The article mentions the six rules for choosing effective supporting materials. Name the three you feel are the most important and explain why you feel this way. (Site 1)
Answer:
Don't have to many. I feel like this is one of the most important because if you go on to long about the same thing you will begin to lose your audience and the speech will not be as good anymore. Match the Material to the audience. This is another very important one because if the audience can relate to what you are saying they are going to be way more engaged in what you have to say. Make the purposeful. This is final and 3rd most important rule because what you are saying has to mean something or else what is the point in saying it at all.
Explanation:
Personally don't think this is that good of an essay but I got a 100% on it so it works.
The most important rules include the following;
Saying meaningful words.Matching the material with audience.Be short and concise to prevent ambiguity.What is an Audience?These are referred to as a group of listeners or spectators. It is best to convey information to them in the best possible way.
This is why the important rules which are mentioned above must be followed to prevent confusion.
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Please answer!!
Read the paragraph from the section "Types Of
Isolation."There are biological properties of organisms
that prevent breeding across different species. They are
known as reproductive isolating mechanisms (RIMs). A
mechanism is a process or method. Which option is the
BEST definition of "properties" as it is used in the
paragraph above?
The correct answer is B. Traits or features that take effect.
Explanation
Property is a word to designate any quality that identifies identifying something or someone, distinguishing it from its peers. It can refer to different issues such as its characteristics, capabilities, possibilities, physical appearance, among others. According to the text, "There are biological properties of organisms that prevent breeding across different species". So the answer is B. Traits or features that take effect.
I need help with this fossil record thing
Answer:
millions of thousands of species , most of which are evidence of all the fossil record
Explanation:
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