Imagine that a binding site is gained in the wing enhancer region, lost in the abdomen enhancer region, and transcription factors are expressed in the appropriate tissues. The resulting fly would:

a. look like a wild type fly.
b. have wing pigmentation but no abdominal pigmentation.
c. have abdominal pigmentation but no wing pigmentation,
d. have a homeotic transformation.


B

Biology & Microbiology

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In terms of sex chromosomes, females have:

a. one X chromosome and one Barr body b. one X chromosome c. one X chromosome and one Y chromosome d. two active X chromosomes e. two Barr bodies

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In this diagram of the heart, which of the

following choices correctly identifies A and B?

a. A is the AV node; B is the cardiac pacemaker. b. A is the SA node; B is the septum. c. A is the AV node; B is the SA node. d. A is the SA node; B is the AV node. e. A is the septum; B is the cardiac pacemaker.

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The sodium-potassium pump functions to pump

What will be an ideal response?

Biology & Microbiology

In a population characterized by type III survivorship, the probability of survival __________ with

age. a. increases b. decreases c. does not change d. first decreases then increases e. first increases then decreases

Biology & Microbiology