Calico cats have large patches of different color fur. what can you conclude about the timing of x-inactivation in these female cats? a)it occurs continually through the life of the cat. b)it occurs very early on in embryonic development. c)it occurs after exposure to the external environment. d)no identifiable relationship exists.

Select the correct answer from each drop-down menu proteins are

Which of the following factors would not contribute to allopatric speciation? a) a population becomes geographically isolated from the parent population.b) the separated population is small, and genetic drift occurs.c) the isolated population is exposed to different selection pressures than the ancestral population.d) different mutations begin to distinguish the gene pools of the separated populations.e) gene flow between the two populations is extensive.

No plagiarizing ! 6th grade work! easy and 100 compare the parts of a cell and the cell as a whole to another common nonliving system (i.e., a car, a city, describe the parts of a cell and their primary function.