A Sweet Pea Plant of Genotype A/A

question 16

Multiple Choice

A sweet pea plant of genotype A/A ^. B/B is crossed to one that is a/a ^. b/b to produce a dihybrid F₁.One cell of one F₁ individual (genotype A/a ^. B/b) goes through meiosis and produces four gametes of the following genotypes: A ^. b,A ^. b,a ^.B and a ^.B.What can be concluded regarding the linkage relationship between the two genes?

• A)Genes A and B are linked;the result is indicative of linkage as the gametes are recombinants.
• B)Genes A and B are linked;the result is indicative of linkage as the gametes are the products of crossovers.
• C)Genes A and B could be linked or unlinked;the result is not indicative of either,because in both cases it's possible to obtain 100% recombinant gametes from one meiosis.
• D)Genes A and B could be linked or unlinked;the result is unusual as we should never obtain more than 50% recombinants from one meiosis.
• E)Genes A and B are unlinked;the result is indicative of independent assortment as only two genotypes are represented among the gametes.

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Definitions:

Word-Superiority Effect

A phenomenon where words are more easily recognized and processed than individual letters or non-words in reading and perception tasks.

Whole-Word Method

An approach to teaching reading that emphasizes the recognition of words as whole units rather than as a sequence of letters and sounds.

Intellectual Skills

Abilities related to thinking, reasoning, and problem-solving.

Morpheme

The smallest grammatical unit in a language, incapable of further division, that carries meaning; examples include root words, prefixes, and suffixes.