A Dihybrid in Cis Is Crossed to a Dihybrid in Trans

question 3

Multiple Choice

A dihybrid in cis is crossed to a dihybrid in trans (the two genes of interest,A and B,are linked) .What proportion of the progeny is expected to be homozygous recessive with respect to the two genes of interest?

• A)less than 6.25%
• B)more than 6.25%,but less than 18.75%
• C)about 18.75%
• D)more than 18.75%,but less than 37.5%
• E)more than 37.5%

Understand the diversity and characteristic features of cnidarians.

Differentiate between the various phyla of marine invertebrates based on their anatomical and physiological traits.

Describe the evolutionary significance of true nerve cells and their first appearance in the animal kingdom.

Explain the role of nematocysts in cnidarians and their mode of operation.

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Definitions:

Early Childhood

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A condition affecting mental health, provoked by direct experience or seeing a frightening event, noted for its flashback episodes, bad dreams, and significant anxiety levels.

Distressing Dreams

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Intrusive Memories

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