Cells that relay information gained from the environment to the brain are called
a. chondrocytes.
b. neurons.
c. fibroblasts.
d. macrophages.

If a strand of dna has 35% thymine. what is the percentage of cytosine, adenine, guanine?

9. the history of life on earth is recorded in

Punnett squares are used to show possible combinations of alleles or to predict the probability of a trait occurring in offspring. an incomplete dominance cross is performed between a bird that is homozygous for red feathers and a bird that is homozygous for blue feathers. purple offspring result. then, two of the purple offspring are crossed. according to the punnett square for this cross, how many of the offspring from the second cross will have a feather color that results from incomplete dominance? 1 in 4 2 in 4 3 in 4 4 in 4