A Particular Cross Gives a Modified Dihybrid Ratio of 9:7

question 24

Multiple Choice

A particular cross gives a modified dihybrid ratio of 9:7.What phenotypic ratio would you expect in a testcross of the fully heterozygous F₁ crossed with the fully recessive type?

• A)1:1
• B)3:1
• C)1:3
• D)2:3
• E)2:1

---

Definitions:

Processed Topping

A prepared or treated ingredient used to enhance the flavor, appearance, or nutritive value of a dish.

Marginal Utility

The additional satisfaction or benefit (utility) that a consumer derives from purchasing one more unit of a good or service.

Natural Logarithm

A mathematical function that calculates the time needed to reach a certain level of growth, based on the constant e (approx. 2.71828).

u(X,Y)

A utility function representing the satisfaction a consumer gets from consuming quantities of goods X and Y.