Question

in pea plants, tall (t) is dominant to short (t), and green pods (g) are dominant to yellow pods (g). what ratio of the offspring from a ttgg with ttgg cross is expected to be tall and green?
0/16
3/16
9/16
16/16

Explanation:

Step1: Analyze the T - t cross

The cross for the height trait is TT x Tt. The possible gametes from TT are all T, and from Tt are T and t. The offspring genotypes will be TT and Tt. Since T (tall) is dominant, all offspring will be tall.

Step2: Analyze the G - g cross

The cross for the pod - color trait is GG x Gg. The possible gametes from GG are all G, and from Gg are G and g. The offspring genotypes will be GG and Gg. Since G (green) is dominant, all offspring will be green.

Step3: Combine the results

Since all offspring are tall from the height cross and all offspring are green from the pod - color cross, the ratio of tall and green offspring is 16/16.

Answer:

D. 16/16