Which term would be applied to a regulatory condition that occurs when protein is associated with a particular section of DNA and greatly reduces transcription?
A) induction
B) reduction
C) compression
D) positive control
E) negative control
E
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Mutation rates are similar in Bacteria and Archaea, yet certain stressful conditions mutation rates increase. Why is the mutation rate not constant and close to zero all of the time?
A) Increased mutation rates can be advantageous in rapidly changing environments because some random mutations may be useful for survival. B) Microorganisms carefully control the mutation rate of their DNA to match the environmental conditions and maximize evolution. C) The increased mutation rate under stressful conditions is an indication that the microorganisms can no longer replicate their DNA properly and are about to die. D) Constant mutation rates would halt evolution completely.
You are studying reproduction in a species of frog. Two gametes that are diploid join to form a viable zygote (F1). If the F1 mates with one of the parents, will there be viable offspring?
A. yes B. no
Choose the letter of the best match: Prevention of embryo implantation
A. birth control pill B. intrauterine device C. diaphragm D. foams and jellies E. vasectomy
A father who has red-green color blindness and a mother who has normal vision may have the following child:
A. Color blind male child B. Color blind female child C. Normal vision male child only D. Normal vision female child only. E. Normal vision male or female child.