Nucleotide differences for a dna sequence on chromosome 1 are shown for five species. according to the data, which hypothesis is best supported? a) species 5 is the common ancestor to all other species. b) species 1 and 2 diverged from each other more recently than all other species. c) species 3 and 4 are able to interbreed successfully due to few nucleotide differences. d) species 3 has a more recent common ancestor with species 5 than it does with species 1.

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.

Sediment layers stop lateral spreading when: they encounter a barrier they encounter an opposing current they run out of additional sedimentary material

Why does it matter if osmosis is put into a “scab” or a “nosebleed? ” where would that leave him?