Assume a Double Crossover Occurs in This Pair of Chromosomes

question 20

Multiple Choice

Assume a double crossover occurs in this pair of chromosomes that results in chromatids of the genotype AbC and aBc.If the first crossover (the one between A and B) involves chromatids 1 & 4, which chromatids could be involved in the second crossover?

• A)1 & 2 or 3 & 4
• B)1 & 3 or 2 & 4
• C)1 & 4 or 2 & 3
• D)1 & 3 or 1 & 4 or 2 & 3 or 2 & 4
• E)any two of the four chromatids

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Definitions:

Ascomycota

A phylum of fungi characterized by the formation of spores in a sac-like structure called an ascus.

Zygomycota

A class of fungi characterized by their life cycle including a sexual phase that produces zygospores, often found as molds on food or organic matter.

Economic Importance

The significance of a particular sector, industry, or commodity in contributing to the economic health and growth of a region, country, or global economy.

Fungi

A domain of organisms capable of producing spores that consume organic matter, which includes entities such as molds, yeast, different types of mushrooms, and toadstools.