Humans, crocodiles, bats, whales, and birds have similar limb bones. what do these similarities suggest?

a.
humans, bats, and crocodiles share an ancestor with whales but not with birds.

b.
humans, crocodiles, bats, whales, and birds evolved from a common ancestor.

c. a similar limb structure evolved in each species independently and by chance.

d.
the common ancestor of a human and a bird was a whale.

Looking at this image, what relationship can be drawn from it? the lower the degree of latitude, the lower the degree of temperature there is no relationship between latitude and temperature the higher the degree of latitude, the higher the degree of temperature the lower the degree of latitude, the higher the degree of temperature

Which of the following is the earliest era of earth's geologic time scale? cenozoic mesozoic precambrian paleozoic

Suppose a particular species of tulip plant has three alleles for the gene that codes for flower color. the cr allele produces red tulips, the cp allele produces purple tulips, and the cw allele produces white tulips. cr is dominant over cp and cw, and cp is dominant over cw. for each of the following crosses, determine the expected ratio of offspring for each flower color. cr cp x cp cw cr cw x cp cw 1 red: 1 purple : 0 white, 1 red: 2 purple: 1 white, 2 red: 1 purple 1 white, 1 red: 3 purple : 0 white, 2 red: 0 purple : 2 white, 2 red: 2 purple : 0 white