Choose one pls By studying pea plants, Mendel discovered that purple flowers (P) are dominantto white flowers (p), yellow seeds (Y) are dominant to green seeds (y), and roundseeds (R) are dominant to wrinkled seeds (r). When a gamete is formed from aplant that is heterozygous for all traits, there are several different allelecombinations possible for the resulting gamnete. What causes this phenomenon?Alleles for different genes assort independently from each other during gameteformation.Incomplete dominance of alleles allows numerous combinations.During gamete formation, alleles for the same gene separate from each other.When alleles are present on linked genes, they separate into numerous combinationsduring meiosis.

The three laws of Mendel are: Law of dominance - Only the dominant gene expresses itself. The…

Answered: By studying pea plants, Mendel…

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter8: Patterns Of Inheritance

Section: Chapter Questions

Problem 2ACQ: Figure 8.10 In pea plants, purple flowers (P) are dominant to white (p), and yellow peas (Y) are...

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By studying pea plants, Mendel discovered that purple flowers (P) are dominant
to white flowers (p), yellow seeds (Y) are dominant to green seeds (y), and round
seeds (R) are dominant to wrinkled seeds (r). When a gamete is formed from a
plant that is heterozygous for all traits, there are several different allele
combinations possible for the resulting gamnete. What causes this phenomenon?
Alleles for different genes assort independently from each other during gamete
formation.
Incomplete dominance of alleles allows numerous combinations.
During gamete formation, alleles for the same gene separate from each other.
When alleles are present on linked genes, they separate into numerous combinations
during meiosis.

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Step 1

The three laws of Mendel are:

Law of dominance - Only the dominant gene expresses itself. The recessive gene gets suppressed
Law of segregation - According to the law of segregation, only one of the two gene copies present in an organism is distributed to each gamete (egg or sperm cell) that it makes, and the allocation of the gene copies is randomWhen the sperm cell and egg cell unite during fertilization, the DNA from each cell is combined so that the offspring has two copies of each gene.
Law of independent assortment - Mendel's law of independent assortment states that the alleles of two (or more) different genes get sorted into gametes independently of one another. In other words, the allele a gamete receives for one gene has no influence on the allele received for another gene.

Incomplete dominance is a modification of Mendel's laws which states that when a dominant allele is present; it or does not completely mask the effects of a recessive allele, and the organism's shows a blending of both the dominant and recessive alleles. It is also called semi-dominance or partial dominance.

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