state law of segregation. explain it with the inheritance of height of the plant in pea garden pea
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Answer:
Law of Segregation Examples: Pea Plant Pollination
Pea plants can self-pollinate, or they can be pollinated by placing pollen from the stamens of a parent plant on the pistil of another plant.
Since Mendel was interested in the offspring of two plants with different traits, he removed the pollen-bearing tops of the stamens from some plants and pollinated their pistils with pollen from specific plants. This process allowed him to control plant breeding.
Mendel started by focusing on flower color. He worked with pea plants that had the same characteristics except for one trait and pollinated them in a monohybrid cross. His experiments included the following steps:
Cross-pollinated true-breeding plants, some with purple and some with white flowers.
Observed that the first generation or the F1 generation was all purple.
Cross-pollinated members of the F1 generation.
Observed that three quarters of the second generation or F2 generation was purple and one quarter was white.
From these experiments he was able to deduce that each one of the pair of alleles for a specific gene was either dominant or recessive. Plants with one or two dominant alleles exhibited the dominant trait. Plants with two recessive alleles exhibited the recessive trait. Plants could have the following combination of alleles:
Purple/purple for purple flowers.
Purple/white for purple flowers.
White purple for purple flowers.
White/white for white flowers.
Purple was the dominant allele and the possible combinations formed the basis for the 3:1 ratio of purple to white flowers.
when the allele for two contrasting character are brought together in F1 generation without blending, they separate in F1 generation during the formation of gametes
Explanation :
* when a tall plant is crossed with dwarf plant, all the F1 hybrid are tall. because tall is dominant.
* when F1 hybrid are self crossed, in F1 generation there are 3/4th of the plant are tall and 1/4th of the plant are dwarf in ratio 3:1.