Sex influenced traits are influenced by the presence of ____
a. cortisol
b. estrogen
c. testosterone
d. thyroid hormone
e. both estrogen and testosterone
ANSWER: e
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Replicating early Earth conditions in the lab, the Miller experiment created from inorganic chemicals
a. life. b. artificial proteins. c. DNA. d. simple molds. e. amino acids.
The French taxonomist who, in 1809, proposed the first testable evolutionary theory that organisms using body parts repeatedly would increase their abilities was
A. Jean Baptiste Lamarck. B. Georges-Louis Buffon. C. Charles Darwin. D. James Hutton. E. Charles Lyell.
Which type of muscle is under voluntary control?
A) Cardiac B) Oxygen enriched C) Epithelial D) Smooth E) Skeletal
Which of the following statements regarding mitosis and meiosis is true?
A) Sister chromatids separate during anaphase of mitosis and anaphase II of meiosis. B) Mitosis takes place in your gametes, whereas meiosis takes place in your somatic cells. C) In metaphase of mitosis and metaphase I of meiosis, homologous chromosomes separate. D) Independent orientation occurs during metaphase of mitosis and metaphase II of meiosis.