B. Gene. Piebalding is caused by mutant copies of genes.
It’s True..................
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Answer:
If the original finches that had been blown over to the Galápagos from South America had already been genetically different from the parental population of South American finches, even before adapting to the Galápagos, this would have been an example of
E) both the first and third of these.
Explanation:
Genetic drift was the process of changing of allele frequencies over generations in a random fashion.
Founder effect is closely linked with the genetic drift. In this case, a few individuals of the original population start a new colony isolated from the other members of the species.
A founder effect happens when a new colony started from few members of the original population. The small size of population means that the colony may have a small variation of the genes in the original population.
A founder effect event happens when a small group of individuals was separated from the rest of the population, whereas a bottleneck effect occurs when most of the population is destroyed.
Answer:
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Answer:
Yes, because each daughter cell contains replicated genetic material, which are exact copy of one another.
Explanation:
Mitosis is a kind of cell division that results in two daughter cells that are genetically identical to the parent cell. Prior to the mitotic process, the cell undergoes DNA replication in the Interphase stage. DNA replication produces a replicated copy of the genetic material (DNA) to form two copies of each chromosome in the nucleus.
This replication gives rise to two copies of the DNA borne on replicated chromosomes called SISTER CHROMATIDS. During Anaphase stage of Mitosis, the sister chromatids separate into opposite poles and eventually into two cells after CYTOKINESIS (cytoplasmic division).
Each daughter cell now contains a nuclei that contains exact copies of genetic material without any form of recombination. Hence, each daughter cell is said to be genetically identical to the parent cell.
