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1. White color (W) is dominant to yellow color (w) in squash. A homozygous white fruit plant is crossed with a heterozygous fruit plant.
1. What is the genotype of the homozygous white fruit plant?
2. What is the genotype of the heterozygous fruit plant?
3. What is the phenotype of the heterozygous fruit plant?
4. What is the expected genotypic ratio of their offspring?
5. What is the expected phenotypic ratio of their offspring?


Sagot :

Answer:

1.P: Yy*yy

P1 has 50% chance to give Y and 50% chance to give y.

P2 has 100% chance to give y.

So the offspring (F1) is 50% Yy and 50% yy, making 50% yellow (Yy)

1.A homozygous plant contains either of the following alleles for seed shape: (RR) or (rr). The (RR) genotype is homozygous dominant and the (rr) genotype is homozygous recessive for seed shape.Aug 9, 2019

2.The genotype of the heterozygous plant is Aa.

3.Heterozygous means that an organism has two different alleles of a gene. For example, pea plants can have red flowers and either be homozygous dominant (red-red), or heterozygous (red-white). If they have white flowers, then they are homozygous recessive (white-white).