Which of the following statements apply to the sex chromosomes?
A) They are identified as XY in the female.
B) They are numbered pair 23 in the karyotype.
C) They contain the same genes as in the other pairs of chromosomes.
D) They are found only in the cells in the gonads, the ovaries and testes.
Ans: B) They are numbered pair 23 in the karyotype.
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A) primary spermatocytes B) spermatogonia C) spermatids D) secondary spermatocytes
What determines the movement of blood in systemic veins?
A. The blood pressure difference between systemic capillaries and the right atrium. B. The contraction and relaxation of skeletal muscles. C. The decrease of thoracic pressure and increase of abdominal pressure due to diaphragm movement. D. Valves in the veins. E. All of the above.
A standing person ________ the head to look toward the ground to see if his/her shoes need to be tied.
Fill in the blank(s) with the appropriate word(s).
________ is the predominant hormone during the follicular phase
Fill in the blank(s) with correct word