Two pea plants are crossed, which are purebred. A father is round, terminal, violet and wrinkled, while the other expresses the phenotypes alternate rough, axial, white, and swollen. The four pairs of characters alternatives are regulated by four genes, each located in different chromosomes. In Fx only the characters round, axial, purple and puffy. In F2 all possible combinations of these characters according to Mendelian inheritance. (a) to what conclusions we can reach about the inheritance of these characters, based on the F1 results? (b) In the results of F2, what phenotype will appear more often? Write a mathematical expression that predict the probability of occurrence of said phenotype. (c) In the results of F2, which phenotype will appear less frequently? write an expression mathematics that predicts this probability. (d) In the F2 generation, with what probability will each of the two phenotypes of P1 appear? (e) If a test cross with the F1 plants how many different phenotypes would appear? How does that number compare to the number of different phenotypes of the F2 generation that we have analyzed before
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.
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Two pea plants are crossed, which are purebred. A father is round, terminal, violet and wrinkled, while the other expresses the
(a) to what conclusions we can reach about the inheritance of these characters, based on the F1 results?
(b) In the results of F2, what phenotype will appear more often? Write a mathematical expression that predict the probability of occurrence of said phenotype.
(c) In the results of F2, which phenotype will appear less frequently? write an expression mathematics that predicts this probability.
(d) In the F2 generation, with what probability will each of the two phenotypes of P1 appear?
(e) If a test cross with the F1 plants how many different phenotypes would appear? How does that number compare to the number of different phenotypes of the F2 generation that we have analyzed before?
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