The Presence of the Same Homeotic Genes in a Wide

question 1

Multiple Choice

The presence of the same homeotic genes in a wide range of organisms indicates that

• A) these genes evolved early in the history of life.
• B) all organisms are composed of exactly the same proteins.
• C) the same homeotic mutations are likely to appear in all organisms.
• D) essentially we can complete the genome mapping of all animals in a short time.
• E) structures remain fairly constant, but regulation of animal development varies widely across the kingdom.

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Definitions:

Founder Effect

A genetic phenomenon where a new population is established by a very small number of individuals from a larger population, leading to a reduced genetic diversity in the new population.

Northern Elephant Seals

Large marine mammals recognized for their significant size and the males' distinctive large noses, native to the North Pacific Ocean.

Genetic Loci

Specific locations or positions on a chromosome where a gene or genetic marker is situated.

Alleles

Different forms of the same gene, found at the same locus on a chromosome, which vary in their nucleotide sequence and can influence the trait they control in different ways.