Question

Please help answer both questions

True or false? In the phrase, 'ABC1 is involved in transcriptional regulation', ABC1 refers to a gene O 1) True O 2) False Question 10 (2 points) Saved Which of the following explain why divergence and fixation of traits can occur more rapidly on islands compared to other geographical locations? Please select all that apply. 1) Species are isolated in an island 2) The founding number of individuals of a species can be small on an island 3) Islands have a high rate of species exchange 4) Reproductive rates tend to be lower on islands

Answer 1

Transcriptional regulation is a process in which the process of transcription i.e formation of RNA from DNA is regulated by activators or repressors. Most activators and repressors are DNA-binding proteins. So if ABC1 is involved n transcriptional regulation it must be a protein and not a gene.

Islands are very special in a way that these are isolated areas, there is no gene flow hence endemism is a common feature here. Also in the absence of choice for reproduction the species undergo inbreeding too as a result genetic diversity remains low here. This finally elevates their extinction risk. Thus the true features of the species on the island are-

Species are isolated in an island.

Reproductive rates tend to be lower on islands.