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In pea plants, a gene R produces red flowers and is dominant to a gene r, which produces white flowers. A gene T produces tall plants and is dominant to a gene t for short plants. If a plant that is homozygous for red flowers and heterozygous for tallness is crossed with a plant that is short and white, what will be the phenotypic ratio of the parents

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Answer:

Red Tall : Red Short :: 1:1

Explanation:

The genotype of the plant which is homozygous for the red flowers and heterozygous for tallness will be RRTt.

The genotype of the short and white plant will be rrtt.

Now, the cross between these two will be as shown in the figure -

So, according to the cross results, we will get 1:1 Phenotypic ratio for Red Tall and Red Short plants.

Ver imagen kamlesh678

Answer:

RrTt, Rrtt, RrTt and Rrtt

50% are red tall,

and 50% are red short

Explanation:

As  Given,

R produce red flower and is dominant on gene r.

r produce white flower.

T  produce tall plants and is dominant  over t.

t produce short plant.

Parents are RRTt  *  rrtt

then the progeny will be

F1  is:

RrTt, Rrtt, RrTt and Rrtt

50% are red tall

and 50% are red short

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