During which of thfollowing stages do cell lineages of identical genetic makeup becomstructurally anfunctionally different froonanother according to thgenetically controlledevelopmental prograof thspecies?
A) cleavage
B) differentiation
C) blastula formation
D) metamorphosis
E) ovulation
Correct Answer:
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Q27: Which cells arproduceduring meiosis I?
A)spermatogonia
B)primary spermatocytes
C)secondary spermatocytes
D)spermatids
E)sperm
Q28: Insidof thpenis therar_ cylinders of spongy tissue.
A)one
B)two
C)three
D)four
E)none
Q29: Seminal fluiis produceby
A)the prostate gland.
B)the seminal vesicle.
C)the
Q30: Which of thfollowing is thlast structurthat a
Q31: Thsecretion of testosteronrequires
A)LH.
B)GnRH.
C)Sertoli cells.
D)FSH.
E)LH, GnRH, and Sertoli
Q33: During ejaculation sperpass frothepididymis into the
A)vas deferens.
B)bulbourethral
Q34: Which of thfollowing statements about thtestes is
Q35: Which of thfollowing statements about speris FALSE?
A)Sperm
Q36: Thyolk, which is in many animal eggs,
Q37: In thprocess of differentiation,
A)some daughter cells usually
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