Asked by Bianka Novalien on Apr 27, 2024
Verified
Which statement is true about homeotic genes?
A) Each homeotic gene has a variable region and a sequence called the homeobox that is very similar in all such genes.
B) They have been found in almost all eukaryotic organisms.
C) All homeotic genes are thought to be derived from an original DNA sequence that has been highly conserved in evolution because of its importance to animal evolution.
D) They are sequentially arranged on the chromosome in the same sequence they are activated during development of the embryo in Drosophila.
E) All the answer choices accurately describe homeotic genes.
Homeotic Genes
Genes that regulate the development of anatomical structures in various organisms during embryonic development.
Homeobox
A DNA sequence found within genes that are involved in the regulation of the development of anatomical structures in various organisms.
Eukaryotic Organisms
Organisms whose cells contain a nucleus and other organelles enclosed within membranes, differing from prokaryotic organisms which lack these features.
- Comprehend the functions and attributes of homeotic, induction, and differentiation genes during the process of morphogenesis and development.
Verified Answer
KI
kadija ibrahimMay 01, 2024
Final Answer :
E
Explanation :
Homeotic genes share a common sequence known as the homeobox, which is highly conserved across different species, indicating their crucial role in development. These genes have indeed been identified in a wide range of eukaryotic organisms, supporting the idea that they originate from a highly conserved ancestral sequence important for animal evolution. Additionally, in organisms like Drosophila, the physical arrangement of homeotic genes on the chromosome mirrors the order in which they are expressed during embryonic development, reflecting their role in specifying the body plan.
Learning Objectives
- Comprehend the functions and attributes of homeotic, induction, and differentiation genes during the process of morphogenesis and development.