Two pairs of independently segregating genes with two alleles each, A/a and B/b, determine plant height additively in a population. The homozygote AA BB is 50 cm tall, and the homozygote aa bb is 30 cm tall. a. What is your prediction of the height in a cross between the two homozygous stocks? b. What genotypes in the will show a height of 40 cm after an cross? c. What will be the frequency of the 40-cm plants? d. What assumptions have you made in answering this question?

structure is maintained and sustained by:

-cytoskeleton: gives cells coherence

-cell wall: support

-cytoplasm: shape

hope this .

d statement

explanation:

the abdomen (less formally called the belly, stomach, tummy or midriff) constitutes the part of the body between the thorax (chest) and pelvis, in humans and in other vertebrates. the region occupied by the abdomen is termed the abdominal cavity. the stomach secretes acid and enzymes that digest food. ridges of muscle tissue called rugae line the stomach. the stomach muscles contract periodically, churning food to enhance digestion. the pyloric sphincter is a muscular valve that opens to allow food to pass from the stomach to the small intestine.