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When Mendel crossed pea plants with green pods with those with yellow pods, the offspring all had green pods if the green pod parent was homozygous. If the green pod parent was heterozygous, then half the offspring had green pods and half had yellow pods.
only green-podded plants. Incorrect^ Letter D on the sheet, about three-quarters green-podded plants and one-quarter yellow-podded plants.
This is a basic Mendel cross where the master himself found out that yellow was the dominant color to green. Many years later we found out that there is another gene involved and that the colors have to do with chlorophyll - not just color. If a pure green is crossed to a purebred yellow, then all the offspring will be yellow. However they do carry the green gene since if these yellow offspring are self-fertilized, they will produce the standard 3/4 yellow and 1/4 green phenotypes.
becoz the expression for a white-coloured allele is dominant while that for a yellow-coloured is recessive.
He figured out that if you cross to separate genes that you get a mixture of both like if he crossed yello smooth peas, with green wrinkly peas. You would get Yellow wrinkly peas.
3 yellow : 1 green
Yy
The reason why short plants reappeared in Mendel's F2 generation of pea plants was because their short trait was heterozygous. Both parents carriedÊthat recessive gene, so they passed it on to their offspring.
This is one of the classic experiments carried out by Gregor Mendel. If you cross pure-breeding green pod plants with pure-breeding yellow pod plants the offspring (F1 generation) will all have green pods. This means that green pod is dominant and yellow pod is recessive. To explain the results, pure-breeding green pod plants must have the genotype GG (homozygous dominant) and yellow pod plants must be gg (homozygous recessive). When they are crossed the F1 offspring will receive a G allele from the green parent and a g allele from the yellow parent, so they will all have the genotype Gg ie they will be heterozygous.
You get a yellow leprechaun.
Gregor Mendel is the father of genetics. While he crossed 2 pea plants (1 yellow/round-dominant, 1 green/wrinkled-recessive; both plants are heterozygous), he saw that 9 of the offspring were yellow and round, 3 of them were green and round, 3 were yellow and wrinkled, and 1 was green and wrinkled. As shown, this is a dihybrid problem (16 squares). Monohybrid problems are very simple. There is also incomplete dominance where a red flower and a white flower cross and produce pink flowers; this means that the offspring did not have the alleles from the parents, so the traits blended. Another type would be co-dominance where the offspring share the alleles of both parents; an example would be the roan cattle (it has both red and white colors from its parents). Multiple alleles are usually in blood types (type A, B, O). Blood type AB is co-dominant. Today, scientists recognize Mendel's discovery of genetics; therefore, it is important people should study genetics in biology.
You may have a canary.