Question

Homeotic genes are responsible for _____.

A. determining the location and pattern of structural features such as limbs
B. influencing human emotional response to juvenile traits such as bulging cheeks and a small chin
C. making several structural proteins in organisms
D. producing enzymes that control metabolic pathways in cells

Answer 1

Homeotic genes, specifically Hox genes, determine the location and pattern of structural features in organisms by regulating the expression of other genes involved in body plan development.

Step-by-step explanation:

Homeotic genes, specifically Hox genes, are responsible for determining the location and pattern of structural features such as limbs in organisms.

They are a group of genes that encode transcription factors, which control the expression of numerous other genes involved in the development of an animal's body plan.

Hox genes serve as 'master control genes,' regulating the activation or suppression of genes that dictate the number of body segments, placement of appendages, and head-tail directionality.

Answer 2

Homeotic genes are responsible for determining the location and pattern of structural features such as limbs (Option A).

Step-by-step explanation:

Homeotic genes, also known as Hox genes, play a crucial role in the development of an organism by determining the spatial arrangement and pattern of body parts during embryonic development. These genes provide instructions for the formation of structures, such as limbs, by regulating the expression of other genes involved in development. The activation of specific Hox genes in different regions along the body axis helps establish the distinct identity and morphology of various body segments (Option A).

Option B is incorrect, as homeotic genes are not directly involved in influencing human emotional responses to traits like bulging cheeks and a small chin. Option C is also inaccurate, as homeotic genes primarily regulate developmental processes rather than directly making structural proteins. Similarly, Option D is not correct, as homeotic genes are not responsible for producing enzymes that control metabolic pathways in cells.

In summary, the correct answer is Option A, emphasizing the role of homeotic genes in orchestrating the intricate process of morphogenesis and ensuring the proper spatial organization of structural features during the embryonic development of organisms.