Suppose a scientist discovers fossils of ancient horses in an area. The fossilized horses are much smaller than modern horses. They are found in the same layer as
many fossilized tree trunks. Today, horses still live in the area, but it is now open
grassland
How do you think the environment has changed over time, and how could this
change have led modern horses to be larger than ancient horses?

Describe your dna model. which part do the straws represent? the pushpins? the paper clips and the black dots you made with the marker?

Suppose that on a small island off the coast of scotland, 32 percent of the population has blue eyes, which means that these individuals must be homozygous for the blue eye color gene (bb). the only other eye color found on the island is brown, and individuals that are homozygous for the brown eye color gene (bb) or heterozygous (bb) will have brown eyes because brown is the dominant gene. assume this population is in hardy-weinberg equilibrium. if 100 babies are born next year, how many of these would you expect to have brown eyes and be heterozygous? a. 58 b. 49 c. 29 d. 43

This is a biological reaction due to a stimulus. i need this quickly !