Which of the following is not a characteristic of continuous variation?
A. Traits can be quantified by measurement.
B. Only a single gene pair contributes to the phenotype.
C. The effect of each additive allele is small.
D. Phenotypes show wide variation in expression.
E. All of these are characteristics of continuous variation.
B
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Which of the following hormones stimulates uterine contractions during the birth process in mammals?
A. oxytocin B. vasopressin C. adrenocorticotropin D. gonadotropin E. urocortin
The combination of DNA and its associated proteins is a(n) ____
a. gene b. nucleolus c. centriole d. chromosome e. allele
_______ and animal cells are both _____________.
Fill in the blank(s) with the appropriate word(s).
Which of the following statements about NAD+ is false?
A) NAD+ is reduced to NADH during both glycolysis and the citric acid cycle. B) NAD+ has more chemical energy than NADH. C) NAD+ is reduced by the action of dehydrogenases. D) NAD+ can receive electrons for use in oxidative phosphorylation. E) In the absence of NAD+, glycolysis cannot function.