A plant with the genotype AABbcc is ________
A. triploid
B. heterozygous for two different genes
C. recessive for three different genes
D. homozygous for two different genes
D. homozygous for two different genes
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Based on fossil evidence, which of the following existed the longest ago?
a. Homo habilis b. Homo erectus c. Australopithecus africanus d. Australopithecus afarensis e. Homo neanderthalensis
Which of the following is NOT true of hormones?
a. They are found in multicellular organisms. b. They are chemical messengers. c. They regulate development. d. They are a type of gene. e. They regulate growth.
Oxidation and reduction reactions are chemical processes that result in a gain or loss of:
A. atoms. B. neutrons. C. electrons. D. molecules. E. protons.
________ is the scientific name of modern man.
Fill in the blank(s) with the appropriate word(s).