Abone is tested, and its c-14 to c-12 ratio is nearly identical to that of the bones of living animals. what can be said about the bone's absolute age?
a. it is 5,730 years old.
b. it is much less than 5,730 years old.
c. it is slightly less than 5,730 years old.
d. it is slightly more than 5,730 years old.

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

Apopulation of bears has genetic diversity. some of the bears have an allele that gives them thicker fur. due to climate change, the winters have gotten colder in their habitat. now the bears with thicker fur are becoming more common in the population. a.) which type of bear is selected for in the coldest ecosystem? b.) what must be the other allele for the type of fur, and what term would you use to describe the fact that the allele is becoming less common in the colder climate? c.) describe the change in the bear population in terms of changing allele frequencies and phenotypes d.) is this an example of natural selection

Bones function as levers for the muscles to provide movement of the body. what refers to increasing the angle of the joint, thus moving two bones farther apart? a) abduction b) adduction c) extension d) flexion