Exam 42: Animal Reproduction

After visiting his doctor for erectile dysfunction, a man is prescribed sildenafil, a drug that prevents cGMP from being degraded.This drug is most likely to help this man's condition by

A woman who recently gave birth is having trouble nursing and the baby is having trouble latching onto the breast.A likely explanation for the problem is that in the absence of adequate suckling, there is not enough stimulation to cause adequate release of _______ from the mother's pituitary gland, thus preventing adequate amounts of milk from being produced.

In humans, which cell is released from the ovary at ovulation?

Refer to the figure showing male reproductive hormones. According to the figure, the cells at which number are similar to the thecal cells in females, and why? What is the name of these cells and where are they found?

Which statement about the male reproductive system is true?

You observe a zebrafish pair in a tank and notice that first the male chases after the female, then the female releases eggs, and then the male releases sperm on top of the eggs.The most likely adaptive advantage to this behavior is that it

Which statement about sexual and asexual reproduction is true?

Which statement about parthenogenesis is true?

The corpus luteum secretes the hormones estrogen and _______.

Which method of contraception would a physician most likely recommend to a young female patient who has tested positive for the sexually transmitted disease genital herpes?

Which statement about female hormones is true?

The jelly surrounding the eggs of the sea urchin Arbacia punctulata release a small peptide into the sea water after they are spawned.This chemical causes sperm of _______ species to swim toward the eggs.

During oogenesis, the first haploid cell with abundant cytoplasm that is produced is the

Ovoviviparous animals are similar to oviparous animals in that developing young receive nutrients stored in the _______.

If you were interested in manipulating amniote embryos early in development and wanted to minimize disruption to the mother, you would select a species that displays

Which feature generates genetic diversity in sexually reproducing animals?

Refer to the figure showing aphid reproductive cycles. Chromosomally, the organisms labeled 3 and 4 are _______.

Refer to the graph showing changes in three female reproductive hormones during pregnancy. Based on the graph, which statement is true?

In developing follicles of the mammalian ovary, the thecal cells secrete testosterone.If the granulosa cells of a follicle are unable to convert this testosterone to _______, they will not express enough FSH and LH receptors to allow for follicle maturation and _______.

Which method of contraception protects against sexually transmitted diseases (STDs)?