3. For each phenotype below, list the genotypes (remember to use the letter of the dominant trait) Straight hair is dominant to curly Tail spikes are dominant to plain tails

straight

spikes

straight

spikes

curly

plain

See the answer below

Explanation:

Let the allele for hair color be A (a) and the allele for tail shape be B (b). Straight hair A is dominant over curly hair a and spikes B is dominant over plain tails b. Hence, the phenotypes and their respective genotypes would be as follows:

       Phenotype     Genotypes

brain development. a child's brain undergoes an amazing period of development from birth to three—producing more than a million neural connections each second. the development of the brain is influenced by many factors, including a child's relationships, experiences and environment.

explanation:

the answer is d p: cell, q: organ, r: organ system, s: tissue