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A pea breeder has performed a series of dihybrid genetic crosses looking at pea color and shape. Yellow color and round peas are each dominant traits while green and wrinkled are each recessive. The following progeny in the second generation (F2) were observed: 150 yellow wrinkled, 417 yellow round, 61 green wrinkled, and 159 green round. The breeder’s hypothesis is that this does not follow Mendel’s rules for random, independent assortment of the traits. Instead, she thinks that there is linkage between these traits. Is her hypothesis correct?

Consider the DNA template 3’—AAATTTTAGCCA—5′. When transcribed, which of the following is the correct resulting transcript?

When Mendel crossed yellow-seeded and green-seeded pea plants and then allowed the offspring to self-pollinate, the results were as follows:  6022 yellow 2001 green 8023 total It is apparent that green is ________.

“Structure N” is most likely ________.

You are trying to inhibit mRNA transcription in eukaryotic animal cells.  You have received three different versions of the same oral drug (attaches to and inhibits RNA polymerase) from the pharmaceutical company.  Drug A is only permeable to the cell membrane and not the nucleus.  Drug B is only permeable to the nucleus but not the cell membrane.  Drug C is permeable to both the cell membrane and nucleus.  Which drug would be the most effective in inhibiting mRNA transcription?

A rancher paid $35,000 for a prize bull guaranteed to not have an unwanted recessive allele of an autosomal gene. He crossed the bull to cows that were homozygous for the unwanted allele, with the result that 3 of the progeny were normal and 2 had the undesired recessive trait.  Which of the following is the best conclusion to be drawn from this result?

“Enzyme X” is most likely ________.

Use the following information for the next four questions. Below is the double-stranded DNA sequence of part of a hypothetical yeast genome, which happens to contain a very small gene. Transcription starts at the Transcription Start Site (TSS) after the promoter and proceeds in the direction of the arrow. Transcription stops at the end of the Transcription Terminator.  (The template strand is the bottom strand going 3′ to 5′) Double-Stranded DNA Sequence Image Description The DNA sequence in double-stranded DNA. The sequence is as follows, starting from T-S-S till the terminator in 3 dash – 5 dash strand. The sequence in the bottom strand that is from 3 dash is C-T-C-G-G-T-A-C-G-T-A(bold)-A-T-A-G-A-T-C-T-A-T-C-A-T-C-C-G-A-G-A-C-T-C-T-T-A-A-A-T-A-G-A-G. The sequence in the top strand that is from 5 dahs is: G-A-G-C-C-A-T-G-C-A-T(bold)-T-A-T-C-T-A-G-A-T-A-G-T-A-G-G-C-T-C-T-G-A-G-A-A-T-T-T-A-T-C-T-C.

Brown v. Board of Education

Betty Friedan’s Feminine Mystique