This question will test your Mendelian genetics knowledge! On a piece of paper, construct TWO Punnett squares (set up both of your Punnett squares like the example square provided below). In this classic Mendelian genetics cross, you will start with a female cat from a PURE BREEDING brown furred population. You mate this female with a male cat selected from a PURE BREEDING yellow furred population. BROWN fur is the dominant allele. In your first Punnett square, show the P generation cross, with the F1 generation results. Be sure to label this as your P generation cross! Use the correct genotype symbols, as used in standard dominant / recessive allele systems, to show all genotypes. In your second Punnett square, do a monohybrid cross of the F1 generation, to show the expected F2 generation results. Be sure to use the correct genotype symbols. Next to BOTH of your Punnett Squares, write out the expected genotype and phenotype ratios for the offspring generations. Use the TERMS used to describe genotypes (not just genotype symbols) when reporting your expected 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.
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In your first Punnett square, show the P generation cross, with the F1 generation results. Be sure to label this as your P generation cross! Use the correct genotype symbols, as used in standard dominant / recessive allele systems, to show all genotypes.
In your second Punnett square, do a monohybrid cross of the F1 generation, to show the expected F2 generation results. Be sure to use the correct genotype symbols.
Next to BOTH of your Punnett Squares, write out the expected genotype and
Example of a Punnet Square:
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