A male human somatic cell has 22 pairs of autosomes and one pair of sex chromosomes.

a. true
b. false


Answer: a. true

Biology & Microbiology

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Which of the following statements about endosymbiosis is FALSE?

a. endosymbiosis has taken place many times among true, multicellular animals b. genes from organelles that originated through endosymbiosis are largely transferred to the host cell nucleus c. The genes that code for ribosomes in mitochondria and chloroplasts are more like those in prokaryotes than in eukaryotes d. mitochondria and chloroplasts divide on their own through binary fission e. endoysymbiosis occurred many times in unicellular animals

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Discuss the importance of twin and adoption studies to human behavioral genetics research. What will be an ideal response?

Biology & Microbiology

Which of the following statements regarding an atom with high electronegativity is true?

a. It will have fewer protons than an atom with low electronegativity. b. It will have a tendency not to attract electrons. c. It will most likely be located on the left-most side of the periodic table of elements. d. None of these choices are correct. e. All of these choices are correct.

Biology & Microbiology

Herbivory is an example of a ________ interaction

A) +/+ B) -/- C) 0/+ D) +/-

Biology & Microbiology