Factors A, B, C, D cont the production of a black pigment. The genes encoding A, B, C and D are independently assorting. The alternate alleles that give abnormal function of these genes are a, b, c, and d. A black AA DD is crossed with a colorless aa bb cc dd to give a black FI. The FI is then d with a colorless aa bb cc dd. Assume that A, B, C and D act in a pathway as follows: colorless colorless grey brown black
What percentage of the F2 are black?
Choose one:
a. 1/4
b. 1/6
c. 1/8
d. 1/16
e. None of above

1. true.2. true.3. true.4. false.5. true.the concept of darwin's theory of evolution involves the idea that there are limited resources in a given living environment and that the organisms which live within have variations in their genetic make up due to random mating. the ones with beneficial genetic variations can express certain traits which give them an upper hand in surviving and reproducing in the said environment compared to ones who may have a more disadvantageous variation in traits. over time, the organisms with an upper hand will survive and reproduce more frequently and pass on their beneficial genes while the others die. the result is evolution, where we observe (usually, but not always) eventually, phenotypic distinct changes.

Your answer will be b action plan.