The dominant phenotype can be produced by which of the following?
a) Rr only
b) Both RR and Rr
c) RR only
d) Both Rr and rr
e) rr only
Ans: b) Both RR and Rr
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Heritability is the amount of genetic variation in a particular population and a particular environment
Indicate whether the statement is true or false
An early sign of plaque formation in coronary arteries is
a. a heart attack. b. hypertension. c. hypotension. d. angina pectoris. e. rapid heart beat.
Marsupials, together with which one of the following groups, combine to make a monophyletic assemblage?
a. monotremes b. reptiles c. placental mammals d. birds e. amphibians
An enzyme that makes covalent bonds between the sugar of one nucleotide and the phosphate groups in another nucleotide in DNA is
A) RNA polymerase. B) DNA ligase C) DNA helicase. D) transposase. E) DNA polymerase.