____ is NOT a vitamin.
A. Thiamine
B. Riboflavin
C. Niacin
D. Calcium
D. Calcium
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Traits that are similar in two species as a result of common ancestry are referred to as:
A. homologous. B. analogous. C. convergent. D. derived. E. ancestral.
The Immigration Restriction Act of 1924 was supported by research that demonstrated that Western Europeans were genetically superior to Eastern Europeans
a. True b. False Indicate whether the statement is true or false
Which of the following statements about nucleic acids is FALSE?
a. DNA is double-stranded; RNA is single-stranded. b. "DNA contains carbohydrates; RNA contains amino acids." c. DNA contains deoxyribose; RNA contains ribose. d. DNA functions as the genetic material; RNA functions in protein synthesis.
If one parent is heterozygous for a dominant allele on an autosome and the other parent is homozygous, any child of theirs has a __________ chance of being heterozygous.
A) 25 percent B) 50 percent C) 75 percent D) no chance; it will die