In a Family Both Parents Have Freckles and Widow's Peak

question 52

Multiple Choice

In a family both parents have freckles and widow's peak.Both of these traits are dominant: F=freckles,W=widow's peak.What is the correct phenotypic ratio of the next generation if the parents were heterozygous? The order of the genotypes is: Freckled with widow's peak: Freckled,straight hairline: no freckles with widow's peak: no freckles,straight hairline.

• A)9:3:1:1
• B)9:3:3:1
• C)9:1:1:3
• D)1:3:3:9

---

Definitions:

Quantifier Negation

The process of negating the quantifiers in logical expressions, effectively altering the scope and meaning of the statement.

Universal Generalization

A principle in logic and mathematics that allows for the formulation of a general statement from the observation of particular instances.

Existential Instantiation

A logical rule asserting that if an existential statement is true, there is at least one specific instance of its subject that satisfies its predicate.

Universal Instantiation

A logical rule that allows for the deduction of a particular instance of a statement from a universal statement.