Genes Usually Have Multiple Alleles

question 21

Multiple Choice

Genes usually have multiple alleles. Alleles that have the same phenotype can be grouped together. Alleles can also be ranked in an allelic series, such as with agouti, which governs coat color in dogs and other animals. Rank the following alleles for the hypothetical gene C, governing hair color, in order of dominance (most dominant first) .
There are four alleles: C^r, C^y, C^b, and C^w. Individuals homozygous for these alleles have red, yellow, black, and brown hair, respectively. C^r_ individuals have red hair. Heterozygotes carrying C^y do not have yellow hair. In a cross between homozygous C^b and C^w individuals, ¾ of the offspring have brown hair.
-C^b

• A) 1 (most dominant)
• B) 2
• C) 3
• D) 4 (least dominant)

Understand the law of demand and its implications on market behavior.

Distinguish between movements along supply and demand curves and shifts in these curves.

Evaluate the effects of changes in income on the demand for normal and inferior goods.

Interpret market dynamics such as excess supply and demand and their impact on prices.

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Definitions:

Business Situation

A set of circumstances or conditions faced by a business that requires strategy and decision-making.

Sieve-tube Members

Specialized cells in the phloem of plants that facilitate the transport of sugars and nutrients from the leaves to other parts of the plant.

Phloem Transport

The process by which sugars, produced during photosynthesis, are transported throughout a plant via the phloem tissue.

Passive Diffusion

The process by which molecules move from an area of higher concentration to an area of lower concentration without the input of energy.