Question

In pea plants, p is purple flowers, p is white flowers, t is tall plants, and t is short plants. cross two fully heterozygous plants (pptt x pptt). what is the phenotypic ratio of the f1 generation?

Answer 1

The phenotypic ratio of heterozygous plants (pptt x pptt) in the f1 generation is 1:1:1:1.

Briefing :

P and T are dominant alleles p and t are recessive alleles

Parents: PpTt, pptt

Possible gametes are  PT, Pt, pT, pt

where

pt (all the small) i.e white small

pT white tall

PT (all the big) i.e purple tall

Pt purple small

What is alleles?

Leading textbooks on genetics and evolution define an allele as a variant of the same sequence of nucleotides at the same location on a long DNA molecule. "The chromosomal or genomic location of a gene or any other genetic element is called a locus, and alternative DNA sequences at a locus are called alleles.

Alleles are the various variations of a gene. Alleles can be recessive or dominant. Even if a person only possesses one copy of a dominant allele, it still has an impact (also known as being heterozygous).

To know more about gene visit :

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I understand the question that you are looking for :

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.