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Biology, 05.05.2020 05:18 janayshas84

1. Agkistrodon piscivorus are a species semiaquatic venomous snake found all over the southeastern United States including Florida. They can be found in nearly all freshwater habitats but are most common in cypress swamps, river floodplains, and heavily-vegetated wetlands. Their coloration is highly variable: they can be beautifully marked with dark cross bands on a brown and yellow ground color or completely brown or black. Their color is specifically controlled by 4 genes with more dominant alleles creating a more banding and more recessive alleles creating a more solid scale color .

In heavily-vegetated wetlands solid colored individuals are more difficult to for predators, like hawks, to locate which genotype below would be most successful in the heavily-vegetated wetlands?
A. AaBbCcDd
B. AABBccDd
C. AabbccDd
D. aaBBccDd

2. In dogs merle color (spotted) is incompletely dominant to solid colors like red, brown, or black. The gene for a white patch of fur on the chest or face is completely dominant to no white patch of fur.

Looking at the litter of puppies above, which statement best explains why some of the puppies have inherited both the white patch and the merle gene, some have inherited only one of the two traits, and others are neither merle nor do they have a white patch
A. The law of dominance states that dominant traits are inherited separately while incompletely dominant traits are inherited together.
B. The law of segregation states that each offspring inherits traits separately and that multiple traits will never be inherited from the same parent.
C. The law of independent assortment states that the allele for each trait is inherited separately from one another so the offspring can express any combination of traits.
D. The law of incomplete dominance states that when one gene is incompletely dominant it is always inherited by the offspring if the offspring inherits another completely dominant trait.

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