Which of the following scientist-discoveries is mismatched?

A. Watson, Crick, Wilkins, and Franklin-DNA structure.
B. Avery, MacLeod, and McCarty-DNA is the genetic material.
C. Meselson and Stahl-mechanism of DNA replication.
D. Griffith-chromosomes.


D. Griffith-chromosomes.

Biology & Microbiology

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Which animal became numerous and widespread by using sonar to enable a high level of activity in the dark?  

A.  bats B.  whales C.  owls D.  dolphins E.  shrews

Biology & Microbiology

What is the genotype of the females that gave rise to these progeny?

Females heterozygous for the recessive second chromosome mutations px, sp, and cn are mated to a male homozygous for all three mutations. The offspring are as follows:



A) px+sp cn / px sp+cn+
B) px+sp cn+ / px sp+cn
C) px+sp+ cn+ / px spcn
D) pxsp cn+ / px+ sp+cn
E) insufficient data

Biology & Microbiology

The volume of air left in the lungs after maximum

exhalation is indicated by a. A. b. B. c. C. d. D. e. E.

Biology & Microbiology

Root nodules contain ______, which can ______.

a) Azotobacter, fix N2 b) Bitrosomonas, nitrify NH3 c) Rhizobia, fix N2 d) Bacillus, denitrify NO3

Biology & Microbiology