The answer is <span>C) <em>Certhidia </em><em>oliveacea</em>; its tiny pointed bill is the best adapted to sip nectar.
</span><span>In natural selection, genotype variations that will increase the chance of survival and reproduction of some organism are preserved and will be inherited. Among all mentioned species of finch, <em>C. </em><em>oliveacea</em> has the trait that will best help it reach the flower under the sand. Neither the large size of birds, nor digging up worms, nor intermediate traits could help mentioned species (A , B and D choices) to survive if they cannot use the only available or the most common food resource, cacti. The only species with the greatest chance to survive is the one that is able to use available resources, and in this case, this is <em>C. </em><em>oliveacea</em> because of its pointed bill for sipping nectar. </span>
Answer:
Because DNA analysis requires interpretation which can have errors or mistakes because interpretations are subjective no matter how many people agree with your interpretation even if it is right.
Explanation:
Answer:
The percentage of the population that is heterozygous for this trait is 48%
Explanation:
They are two alleles, the phenylthiocarbamide tasters (PTC) and the non phenylthiocarbamide tasters (non PTC). PTC testers are dominant and non PTC tasters are recessive.
let the frequency of the dominant allele(A) be p
and the frequency of the recessive allele(a) be q
We are told that 64 percent of people living in a remote, isolated mountain village can taste phenylthiocarbamide (PTC) and must, therefore, have at least one copy of the dominant PTC taster allele (that is AA and Aa)
Frequency of AA = p², Frequency of Aa = 2pq and Frequency of aa = q²
Therefore p² + 2pq = 64% = 0.64
According to Hardy–Weinberg:
p² + 2pq + q² = 1 and
p + q = 1
Since p² + 2pq = 0.64
∴ 0.64 + q² = 1
q² = 1 - 0.64 = 0.36
q = √0.36 = 0.6
Since p + q = 1
p = 1 - q = 1 - 0.6 = 0.4
The frequency of heterozygous = 2pq = 2 × 0.4 × 0.6 = 0.48
Therefore the percentage of the population that is heterozygous for this trait is 48%
Cellular respiration takes place in the mitochondria. Following this logic: if plant cells use ATP, and ATP is made in the mitochondria, then plant cells must have mitochondria. Plants need to do something with all that glucose they make!
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