A nucleus is the brain of a cell. The nuclear membrane is a double wall that encloses a cell nucleus
Answer:
D. Enzymes open the DNA strand, remove a segment of DNA from the strand that contains the damage, and resynthesize the correct DNA sequence.
Explanation:
From time to time, the DNA gets exposed to certain chemicals or radiation that damages it. However, the cell has a DNA repair mechanism in place called NUCLEOTIDE EXCISION REPAIR (NER).
NUCLEOTIDE EXCISION REPAIR (NER) is one of the DNA repair mechanisms in which certain enzymes open the DNA strand, remove a segment of DNA that contains the damaged gene or nucleotide bases, and resynthesize the correct DNA sequence using the pair of the damaged one.
Answer:
In the given population, epistasis or frequency-dependent selection would have been taking place. In frequency-dependent selection, selection of a genotype relies upon its frequency in population. It is further divided into two types, that is, positive and negative frequency-dependent selection.
In negative frequency-dependent selection rare genotypes are selected, while in positive frequency-dependent selection more common genotypes are selected. The other possibility is epistasis, in which the fitness of genotypes relies upon the non-additive influences over the multiple loci.
Answer:
independence, marriage, parenting, launching, aging
Explanation:
The cycle begins with <em>independence</em> when an adult leaves his parents and becomes an unattached individual, then comes<em> marriage</em>, when an individual connects with another person and they commit forming a marital system, then comes <em>parenting</em> when they have children and focus on bearing them until <em>launching</em> stage comes, meaning their offspring becomes unattached adults and finally comes <em>aging</em> were the marriage can focus on themselves and their future years to come.
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A centriole looks like wafer sticks glued together to make a round long shape.
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