Ageneticist was able to reconstruct a sequence of mitochondrial dna of a prehistoric insect that was encased in amber. a segment of this dna was found to have the sequence aggtcctaag. this segment of dna has had a single mutation every 100 million years. the following sequences have mutated from the original prehistoric sequence, as shown by the highlighted substituted nucleotides. which of these sequences most likely belongs to this insect's descendant after 200 million years have passed?

a. agatctcgga
b. aagaaa
c. aggaag
d. aagtttcagg

Which of the following scenarios is an example of the bottleneck effect? answers a in south africa, much of the afrikaner population is descended from a small number of dutch colonists. in this population, this is an unusually high frequency of pseudoxanthoma elasticum (pxe), an elastic tissue disorder. b four white-tailed deer are introduced to a park in finland. thirty years after their introduction scientists compare the genes in the population and find that there is no variation. c during the industrial revolution, london's air became filled with soot. as a result, birds started eating more of the lighter moths because they were easier to spot than their darker counterparts. over time, the moth population changed so that there were more darker moths than lighter ones. d 10% of the population of american alligators in an area have the recessive trait albinism. a massive flood results in the death of 80% of the population. of the remaining population, 60% have the recessive trait of albinism.

The allele for curly hair is incompletely dominant. if a mother is homozygous for curly hair and the father is homozygous for straight hair, what percentage of the offspring will exhibit characteristics of both parents? 25 percent 50 percent 75 percent 100 percent

How does friction with the atmosphere affect the speed of an artificial satellite