Multiple Choice
In fundamental genetics, what is the key difference between a genotype and a phenotype?
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1. Introduction to Genetics
Fundamentals of Genetics
Multiple Choice
In genetics, what is meant by a gene family?
A
All of the alleles of a single gene found across different individuals in a population
B
A set of genes contributed by each parent that determines an organism’s pedigree or family tree
C
A set of genes within a genome that share significant sequence similarity because they arose by duplication of an ancestral gene and often encode proteins with related functions
D
A cluster of unrelated genes that happen to be located next to each other on a chromosome due to random chance
Verified step by step guidance1
Understand that a gene family refers to a group of genes within a genome that are related by their evolutionary origin.
Recognize that these genes share significant sequence similarity because they originated from duplication events of a common ancestral gene.
Note that members of a gene family often encode proteins with related or similar functions, reflecting their shared ancestry.
Distinguish gene families from alleles, which are different versions of the same gene found in a population, not multiple related genes.
Also differentiate gene families from unrelated gene clusters that are simply located near each other on a chromosome without evolutionary relatedness.
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