Imagine that Ubx expression was shifted one segment posteriorly. The results would be:
a. legs in the location of the antennae. c. a homeotic transformation.
b. antennae in the location of the legs. d. wings in the location of the head.
C
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Why is there no increase in the number of offspring produced by females that have access to additional males beyond the first?
a) The fertility window for female fruit flies is very short. b) Females only ever mate with one male. c) Females are limited in their access to males and so rarely come in contact with more than one. d) Females are limited in offspring production by the availability of male sperm. e) If a single male produces more sperm than the number of eggs produced by the female, access to more sperm does not result in more offspring.
Habitat
What will be an ideal response?
Which of the following is a typical means of halting normal cell division?
A) the shortening of telomeres B) increasing the activity of p53 C) triggering apoptosis D) activating oncogenes
A molecule that is a combination of two or more different elements in a fixed ration, is called a ___.
Fill in the blank(s) with the appropriate word(s).