Cross-pollination, or when pollen from one plant fertilizes another plant of the same produces a?

1 answer:

6 0

Cross-pollination, or when pollen from one plant fertilizes another plant of the same produces outcrossing or outbreeding.

Explanation:

Cross pollination is the transfer of pollen from a plant's stamen to a different plant's stigma of the same species. They produces stronger plants. For example only pollen from a daisy can pollinate another daisy.

They have male and female reproductive units on separate plant. If they are on the same plant he pollen will not fertilize the female reproductive unit on the plant.

This process needs four steps pollination, germination, penetration of the ovule and fertilization. The Zygote divides to form an embryo after fertilization.

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For eye color, the brown allele is dominant over the blue allele. If two parents are heterozygous for eye color, what percentage

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So, since the trait is eye color, let's use E to represent the dominant allele (brown) and e to represent the recessive allele (blue).

I've attached a Punnett square, but let me real quick explain how I set it up. We know that both parents are heterozygous, which means that they have one of each allele. So that gave us the two sides. Then I filled in the boxes (I assume you've leaned how to do this, if message me and I can explain it).

Looking at the results we can see that 1/4 of the offspring are EE, 1/2 are Ee, and 1/4 are ee. Since the blue allele (e) is recessive, it'll only be expressed if no dominant brown alleles (E) are present. Therefore, only the ee genotype will exhibit blue eyes. So, 1/4 or 25% of the offspring will have blue eyes.

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