Question

1. in pea plants seed color is genetically controlled. yellow seeded plants are dominant to green seeded plants. what is the probability that you will have a yellow seeded plant if you crossed two heterozygous plants?______

parental phenotypes: ♀____♂____
parental genotypes: ♀____♂____
possible gametes (eggs and sperm) ♀____ and __; ♂__ and ____.
fill out the punnett square.
♂gametes____ ____
♀gametes______
______
online cross 9
phenotypic ratio of offspring; yellow: ____ green: ____

Explanation:

Step1: Define alleles

Let Y represent the dominant allele for yellow - seeded plants and y represent the recessive allele for green - seeded plants.

Step2: Determine parental genotypes

Since the parents are heterozygous, the parental genotypes are Yy for both the female (♀) and the male (♂).

Step3: Identify possible gametes

The possible gametes for both the female and the male are Y and y.

Step4: Fill the Punnett - square

	Y	y
y	Yy	yy

Step5: Calculate probability

The genotypes of the offspring are YY:Yy:yy = 1:2:1. Since yellow - seeded plants have genotypes YY or Yy, the probability of having a yellow - seeded plant is $\frac{3}{4}$ or 75%. The phenotypic ratio of offspring is Yellow: 3, Green: 1.

Answer:

Parental Phenotypes: ♀ Yellow - seeded, ♂ Yellow - seeded
Parental Genotypes: ♀ Yy, ♂ Yy
Possible Gametes (eggs and sperm) ♀ Y and y; ♂ Y and y
Phenotypic Ratio of Offspring; Yellow: 3, Green: 1
Probability of yellow - seeded plant: $\frac{3}{4}$