Which of the following statements regarding mitosis and meiosis is false?
A) In animals, meiosis only occurs in the ovaries and testes.
B) All sexual life cycles involve an alternation of diploid and haploid stages.
C) Mitosis produces daughter cells with half the number of chromosomes as the parent cell.
D) A normal human zygote has 46 chromosomes.
Answer: C
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Choose the true statements about the cichlid fish of Lake Malawi.
_____ Within a few million years, hundreds of cichlid species evolved within this lake. _____ Hundreds of different genes determine the length of the jaw in these fish. _____ Jaw length does not affect body shape and size. _____ Variation in jaw structure among species allowed cichlids to specialize in many niches.
Which of the following is transported in greater
quantities in the lymphatic system than in the blood? a. red blood cells b. wastes c. fats d. amino acids e. white blood cells
During clonal selection and antigen binding
A) the B cell interacts with the attached microbe. B) the B cell interacts with a T helper cell. C) the T cell gives off interleukins. D) B cells recognize microbes and their foreign antigens.
Describe the transmission-based precautions you need to institute for J.L.