In the figure of a sagittal section of a fingernail shown, where is the lunula?
a) A
b) B
c) C
d) D
e) E
Answer: c
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During in utero (fetal) development of the ovary, which of these occurs?
A. Cell division of primary oogonia results in the production of 2 to 4 million primary oocytes, which are present at birth. B. A single primary oogonium remains dormant, which then undergoes rapid mitosis after birth. C. Cell division of primary oogonia, which all complete both meiotic divisions before birth. D. The mitotic division of primary and secondary oocytes produces cells with 23 chromosomes each. E. Cell division of primary oogonia, which all complete the first meiotic division before birth.
List the four conditions that are needed for adaptive evolution to occur. Provide one specific example of adaptive evolution
What will be an ideal response?
The portion of the nephron that attaches to the collecting duct is the
A) distal tubule. B) proximal tubule. C) loop of Henle. D) minor calyx. E) collecting duct.
List in order the organs through which food and other substances pass in their journey into, through, and out the digestive tract
What will be an ideal response?