Which is not a causative agent of an amebic infection?
a. entamoeba histolytica
b. naegleria fowleri
c. mycobacterium tuberculosis
d. acanthamoeba
Ans: c. mycobacterium tuberculosis
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________ degrades mRNAs that contain no stop codons.
Fill in the blank(s) with the appropriate word(s).
An embryo develops rudiments of all organs by week ________ of prenatal development.
A) 8 B) 4 C) 6 D) 3
Gap genes of Drosophila embryos:a
organize the embryo into broad regions and influence the activity of pair-rule genes. b. are missing from the chromosomes of mutant flies. c. are genes that have moved to gaps on other chromosome during meiosis. d. cause gaps in the cell cycle. e. cause the death of embryos before they hatch.
If a cell had 12 chromosomes at the beginning of meiosis II, how many would each daughter cell have after the completion of meiosis II?
A) 6 B) 12 C) 18 D) 24