What can be correctly inferred from the figure shown here.

A. Many genes are duplicated

B. Number of different gene families is larger than the total number of genes

C. A gene family arises by repeated duplication of an ancestral gene followed by accumulation of changes in sequence among the copies

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#Question id: 3871

#Unit 3. Fundamental Processes

Which of the following is not known to be involved in initiation by eukaryotic RNA polymerase II?

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#Question id: 33695

#Unit 2. Cellular Organization

if an individual has only one α gene, the excess β chains form the unusual tetramer b4, which causes

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#Question id: 18083

#Unit 8. Inheritance Biology

The interaction of selection and inbreeding in determining the incidence of autosomal recessive diseases. Consider a gene in which recessive mutations occur at a rate of 10^-5. Assume a selective disadvantage S of 0.4 in homozygotes for the recessive allele. Would q be expected to rise, fall, or remain unchanged during the first 10 generations after the cessation of inbreeding, Briefly justify your answer. What numerical value would q approach after thousands of generations with no inbreeding?

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#Question id: 12024

#Unit 7. System Physiology – Animal

Constipation can result from the consumption of a substance that ________.

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#Question id: 4635

#Unit 11. Evolution and Behavior

Which statement about natural selection is most correct?