QUESTION 1 Some dogs bark while following a scent trail; others are silent. The barker allele is dominant (B) to the silent recessive allele (b). The allele for straight tails is dominant (S) over the allele for curly tails (s). If two dogs are heterozygous for both traits, which of these correctly identifies the genotypes of the parents? O a. BbSs x BbSs O b. BbSs x bbss O c. BbSs x bbSs O d. Bbss x bbSs QUESTION 2 Some dogs bark while following a scent trail; others are silent. The barker allele is dominant (B) to the silent recessive allele (b). The allele for straight tails is dominant (S) over the allele for curly tails (s). If two dogs are heterozygous for both traits, when we "FOIL" to see what allele combinations they can give to their puppies, what would the row or column headings be? O a. Bs, bs, Bs, bs O b. bS, bs, bS, bs O c. bs, bs, BS, BS O d. BS, Bs, bS, bs
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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