As used in twin studies in mammals, distinguish between the terms concordant and discordant
What will be an ideal response?
Concordant refers to a given trait expressed similarly between twins; discordant refers to a case in which one member of the twin pair expresses the trait but the other does not.
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The detailed report of an experiment is usually published in a
(a) newspaper. (b) book. (c) scientific journal. (d) magazine.
Linkage between a gene of interest and a DNA marker is being studied. A mating results in 6 parental and 3 recombinant offspring. What additional data would increase your confidence that the gene of interest and the DNA marker are linked? (Select all that apply.)
A) Analysis of another mating from the same pedigree that produced 4 parental and 4 recombinant offspring. B) Analysis of a mating from a different pedigree that produced 4 parental and 4 recombinant offspring. C) Analysis of a mating from a different pedigree that produced 6 parental and 2 recombinant offspring. D) Analysis of another mating from the same pedigree that produced 6 parental and 2 recombinant offspring.
Unlike other epithelia, epithelia that make up the capillaries have hole in them called fenestrations
a. true b. false
The oldest proposed cell microfossils come from structures called _____.
A. stromatolites B. crystal filaments C. hydrothermal vents D. pyrite E. tectonic plates