In garden peas, purple flowers (P) are dominant to white (p) flowers, and tall plants (T) are dominant to short plants (t). If a purple tall plant (PpTt) is crossed with a white short plant (pptt), what is the resulting phenotypic ratio?

A. 1:1:1:1 purple tall to purple short to white tall to white short,
B. 3:2 purple tall to purple short,
C. 9:3:3:1 purple tall to purple short to white tall to white short,
D. all purple tall.

Explanation:

As given;

Purple flower(P) is dominant over white (p) flower, so Pis dominant over p.

Tall plant (T) is dominant over short plant (t), so T is dominant over t.

Cross between purple tall plant (PpTt) and white short (pptt)

PpTt × pptt ; gametes are Parent-1: PT, Pt, pT, pp & parent-2: pt

Offspring are:  PpTt, Pptt, ppTt, pptt ( genotype)

Phenotype: PpTt = purple tall,

                    Pptt= purple short

                    ppTt= white tall

                   pptt= white short

So the ratio is 1:1:1:1 purple tall to purple short to white tall to white short.

the element that provides strength to the exoskeletons of clams and oysters is phosphorus.

this is so because calcium carbonate is the main component in the shells. calcium carbonate is strengthened by phosphorus.

explanation:

i don't understand

explanation:

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