What allows each strand of DNA to serve as a template for a new DNA strand during replication?
a. covalent bonding between nucleotide bases
b. hydrogen bonds between the deoxyribose and the phosphate groups
c. complementary base pairing between purines and purines on opposite strands
d. complementary base pairing between pyrimidines and pyrimidines on opposite strands
e. complementary base pairing between purines and pyrimidines on opposite strands
e
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Which component distributes water and nutrients throughout the plant body?
a. ground tissue b. vascular tissue c. dermal tissue d. root e. shoot
A dance that recruits other bees into foraging 90
degrees to the right of the sun is indicated by a. A. b. B. c. C. d. D. e. E.
What would be the blood type of a person who inherited an Ia allele from one parent and i allele from the other?
A.) type O B.) type B c.) type A D.) type AB
Which types of phenotypic ratios are likely to occur in crosses when dealing with three gene pairs for which all the genotypic combinations are of equal viability?
A) 12:3:1, 9:7 B) 1:2:1, 3:1 C) 2:3, 1:2 D) 1:4:6:4:1, 1:1:1:1 E) 27:9:9:9:3:3:3:1