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In pea plants, yellow seeds (Y) are dominant to green seeds (y) and round seeds (R) are dominant to wrinkled seeds (r). The genes for seed color and seed shape are on different chromosomes. Two true-breeding parents, one with yellow round peas and the other with green wrinkled peas, are crossed. What are the genotypes of the parents, and what kind of gametes will they produce?

a. The genotype of the plant with yellow round seeds will be YYRR and produce Y gametes and R gametes, while the genotype of the plant with green wrinkled seeds will be yyrr and produce y gametes and r gametes.
b. The genotype of the plant with yellow round seeds will be yyrr and produce yr gametes, while the genotype of the plant with green wrinkled seeds will be YYRR and produce YR gametes.
c. The genotype of the plant with yellow round seeds will be YYRR and produce YR gametes, while the genotype of the plant with green wrinkled seeds will be yyrr and produce yr gametes.
d. The genotype of the plant with yellow round seeds can be YYRR or YyRr and will produce YR, Yr, yR and yr gametes, while the genotype of the plant with green wrinkled seeds will be yyrr and produce yr gametes.
e. The genotype of the plant with yellow round seeds will be YR and produce Y and R gametes, while the genotype of the plant with green wrinkled seeds will be yr and produce y and r gametes.

Respuesta :

Answer:

c. The genotype of the plant with yellow round seeds will be YYRR and produce YR gametes, while the genotype of the plant with green wrinkled seeds will be yyrr and produce yr gametes.

Explanation:

A true breeding plant always has identical alleles of a gene and is homozygous in nature.

The genotype of the true-breeding parents with yellow round peas: YYRR. The genotype of the pure breeding parent plant with green wrinkled peas: yyrr.

Gametes are always pure which means that a gamete carries only one allele of a gene. Since both the parent plants are true breeding, there will not be any segregation of alleles during gamete formation. Therefore, the parent plant with yellow round peas "YYRR" would form all the gametes with "YR" alleles while the parent plant with green wrinkled peas "yyrr" would form all the gametes with "yr" alleles.

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