If the human reproductive cycle only included diploid cells, the offspring of each generation would have twice as much genetic material in each cell as the parent cells.
a. true
b. false
Ans: a. true
Biology & Microbiology
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The earliest nervous system likely resembled a:
A. nerve cord. B. ganglia. C. simple brain and nerve cord. D. nerve net.
Biology & Microbiology
Flatworms have specialized cells called ____ that function in osmoregulation
a. choanocytes b. polyps c. cnidocytes d. flame cells e. tentacles
Biology & Microbiology
The two most important regulatory systems for the maintenance of homeostasis are ____
a. circulatory and nervous systems b. endocrine and circulatory systems c. lymphatic and circulatory systems d. nervous and endocrine systems e. lymphatic and circulatory systems
Biology & Microbiology
The failure of sister chromatids to separate during meiosis is called
a. crossing-over. b. tetrad formation. c. disjunction. d. nondisjunction.
Biology & Microbiology