The air outside your body because when you tried to hold your breath the pressure builds and forces your body to breath by letting out the air but depending the altitude you are the pressure can change hope this helps
A gene pool changes throughout evolution this could be natural selection, genetic drift or a mutation. A gene pool does this to adapt with the needs of the environment it is in
The genotypes of the parents to produce offspring with the genotypes FF and Ff are FF and Ff.
<h3>What is Punnett square?</h3>
The Punnett square is a graphical representation used to determine the frequency of a given genotype.
In this case, the Punnett square may be (alternatively, parents can also be heterozygous):
F f
F FF Ff
F FF Ff
In conclusion, the genotypes of the parents are FF and Ff.
Learn more about Punnett square here:
brainly.com/question/3522181
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The correct answer is DNA.
Each chromosome is made up of DNA tightly coiled many times around proteins<span> that support its structure :)</span>
