Use the Following Information to Answer the Questions Below

question 61

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) :

-What is the greatest benefit of having used a testcross for this experiment?

• A) The homozygous recessive parents are obvious to the naked eye.
• B) The homozygous parents are the only ones whose crossovers make a difference.
• C) Progeny can be scored by their phenotypes alone.
• D) All of the progeny will be heterozygous.
• E) The homozygous recessive parents will be unable to cross over.

Distinguish between point estimates and outliers in statistical analysis.

Calculate and interpret sample proportions.

Sketch and interpret various types of distribution patterns including symmetrical, unimodal, and bimodal distributions.

Understand and explain the concepts of skewness and normal distribution.

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Definitions:

Adaptive Radiation

An evolutionary process in which organisms diversify rapidly into a multitude of new forms, particularly when a change in the environment makes new resources available or opens new niches.

Temporal Isolation

A mechanism of reproductive isolation where two species mate or flower at different times, preventing crossbreeding.

Reproductive Isolation

A set of mechanisms that prevent different species from interbreeding.

Ecological Isolation

A form of reproductive isolation where different species live in the same area but occupy different habitats, preventing them from mating and producing offspring.