What situation most likely explains the occasional high frequency of certain inherited disorders among human populations established by a small population?
Answer: Founder effect
Explanation: The founder effect is genetic drift attributable to colonization by a limited number of individuals from a parent population.
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Which of the following statements about the behavioral effects governed by forS and forR in Drosophila is not correct?
A. The for gene encodes a cGMP-dependent protein kinase. B. This enzyme phosphorylates target proteins in the brain and affects neuronal activity. C. In the absence of food, both sitters and rovers move about in search of food. D. In the presence of food, sitters remain stationary and eat, whereas the rovers move all around the food and eat. E. The sitters usually become obese due to their stationary foraging behavior.
Allopatric speciation occurs because a population
A. merges with another population of the same species. B. becomes geographically isolated and undergoes genetic change. C. becomes extinct and is replaced by a population of a different species. D. shows no genetic change from generation to generation. E. hybrid sterility occurs.
What are the three regions of a prokaryotic gene?
What will be an ideal response?
A complete cell lineage map exists for
A. Drosophila. B. C. elegans. C. human. D. mouse.