Use the Following Information to Answer the Questions Below

question 29

Multiple Choice

Use the following information to answer the questions below.
A plantlike organism on the planet Pandora can have three recessive genetic traits: bluish leaves, due to an allele (a) of gene A; a feathered stem, due to an allele (b) of gene B; and hollow roots due to an allele (c) of gene C. The three genes are linked and recombine as follows:
A geneticist did a testcross with an organism that had been found to be heterozygous for the three recessive traits and she was able to identify progeny of the following phenotypic distribution (+ = wild type) :

-The greatest distance among the three genes is between a and c. What does this mean?

• A) Gene a is closest to b.
• B) Genes are in the order: a-b-c.
• C) Gene a is not recombining with c.
• D) Gene a is between b and c.
• E) Distance a-b is equal to distance a-c.

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Definitions:

Abstract Thought

The ability to think about objects, principles, and ideas that are not physically present, a key component of higher-level cognition.

Conservation

In cognitive development, the understanding that properties such as volume, mass, and number remain the same despite changes in the forms or appearances of objects.

Quantity

A property that exists as magnitude or multitude, referring to the amount or number of a material or immaterial thing.

Schemas

Cognitive frameworks or concepts that help individuals organize and interpret information from the world around them.