For which of the following classes of developmental genes is the phenotype of the developing individual not determined by the individual's genotype?
A) Gap genes
B) Pair rule genes
C) Maternal effect genes
D) Hox genes
E) MADS box genes

Question

Quizplus · Accepted Answer

Maternal effect genes, also known as maternal effect patterning genes or egg-polarity genes, are expressed by the mother and deposited into the egg. The maternal effect gene products, such as transcription factors or signaling molecules, establish the initial spatial coordinates in the embryo and determine the polarity of the body axes. Therefore, the phenotype of the developing individual is not solely determined by its genotype but also depends on the genotype of the mother. In contrast, gap genes, pair rule genes, Hox genes, and MADS box genes are all directly controlled by the individual's genotype and play essential roles in determining the body pattern, segment identity, and organ differentiation during embryonic development.

For Which of the Following Classes of Developmental Genes Is