The frequency of crossing over between any two linked genes is
A) higher if they are recessive.
B) different between males and females.
C) determined by their relative dominance.
D) the same as if they were not linked.
E) proportional to the distance between them
Ans: E) proportional to the distance between them
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What is the function of the poly A tail?
A. The poly A tail is required for the proper exit of mRNA from the nucleus. B. The poly A tail allows mRNA to bind to the ribosome. C. The poly A tail increases mRNA stability in eukaryotes. D. The poly A tail increases mRNA stability in prokaryotes. E. The poly A tail serves as a termination sequence for RNA polymerase III.
Which of the following is not a decapod?
a. shrimp b. lobster c. crab d. krill
The transgenic mouse models for amyotrophic lateral sclerosis (ALS) and Huntington disease show symptoms similar
to those seen in humans affected by these conditions. a. True b. False
Given that a human normally contains 46 chromosomes, give the chromosome number for each of the following conditions:
Turner syndrome (female, no Barr bodies) Klinefelter syndrome (male, one Barr body) triploid Down syndrome (trisomic) trisomy 13