객관식
Why did Thomas Hunt Morgan choose Drosophila melanogaster (fruit flies) for his genetics experiments?
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1. Introduction to Genetics
History of Genetics
객관식
In the context of the history of genetics, what is the term for the ancestor who stands at the top of a common genealogy?
A
Descendant
B
Homozygote
C
Allele
D
Progenitor
검증된 단계별 안내1
Understand the question is asking for the term used to describe the ancestor at the top of a common genealogy, which means the earliest individual from whom others descend.
Recall that a 'descendant' refers to individuals who come after or are derived from an ancestor, so this term describes those below in the genealogy, not the ancestor itself.
Recognize that 'homozygote' is a genetic term describing an organism with two identical alleles for a particular gene, which is unrelated to genealogy or ancestry.
Know that an 'allele' is a variant form of a gene and does not refer to an individual or ancestor in a genealogy.
Identify that the correct term for the ancestor at the top of a genealogy is 'progenitor,' which means the original ancestor or forebear from whom others descend.
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