In Genetics, the Dash Symbol (-) Is a "Wild Card

question 68

Multiple Choice

In genetics, the dash symbol (-) is a "wild card" that stands for either the dominant allele or the recessive allele; for example, R- means the individual has either the genotype RR or Rr. In Duroc-Jersey pigs, genotypes R- S- have a red coat color, R- ss and rr S- have sandy-colored coats, and rr ss pigs are white. R and S show independent assortment. What is the ratio of red : sandy : white among progeny of the cross Rr Ss × Rr Ss?

• A)12:3:1
• B)9:3:1
• C)10:3:3
• D)9:6:1
• E)None of the answer options is correct.

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Definitions:

Anterograde Amnesia

A loss of the ability to create new memories after the event that caused the amnesia, leading to a partial or total inability to recall the recent past.

Explicit Procedural

Refers to the detailed and clear instructions or steps needed to carry out a specific task or procedure.

Semantic Memory

A type of long-term memory involving the capacity to recall words, concepts, or numbers, which is essential for the use and understanding of language.

Episodic Memory

A type of long-term memory that involves recollection of specific events, situations, and experiences.