c) Note the following dihybrid cross: Parent 1 is crossed with Parent 2 a pea plant that is heterozygous for pod color and has a rough seed coat a pea plant that has a yellow pod color and is Heterozygous for seed coat Carefully write out the Genotypes of both Parent 1 and 2. Then write out the possible different gametes each parent can make. (Remember the "mantra." How many genes of each trait can be in one gamete?) Then make a Punnett square. (Remember that a Punnett square only needs to be as big as the number of different gametes and this problem does not need a 4x4 Punnett square.) Now for the f1 generation, give the possible genotypes and their ratios and the phenotypes and their ratios.
Genetic Variation
Genetic variation refers to the variation in the genome sequences between individual organisms of a species. Individual differences or population differences can both be referred to as genetic variations. It is primarily caused by mutation, but other factors such as genetic drift and sexual reproduction also play a major role.
Quantitative Genetics
Quantitative genetics is the part of genetics that deals with the continuous trait, where the expression of various genes influences the phenotypes. Thus genes are expressed together to produce a trait with continuous variability. This is unlike the classical traits or qualitative traits, where each trait is controlled by the expression of a single or very few genes to produce a discontinuous variation.
Assume green pea pods are dominant over yellow pea pods, and assume smooth seed coats are dominant over rough seed coats.
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