Exam 46: Animal Reproduction

Which of the following is the most likely explanation for the absence of a protective filter blocking the passage of alcohol between the maternal and fetal circulations in humans?

Peaks of LH and FSH production occur during

An ectopic pregnancy occurs when a fertilized egg implants somewhere other than in the lining of the uterus. Usually it implants in the oviduct. Which of the following would be the most likely explanation for such a pregnancy being unsuccessful?

Which statement about human reproduction is correct?

Egg laying in fruit flies can be triggered (induced) when males deposit their sperm in the spermathecae of the females. What is the selective advantage of induced egg laying for the male flies?

Among mammals, the male and female genital structures that consist mostly of erectile tissue include the ________.

Increasing the temperature of the human scrotum by 2°C (that is, near the normal body core temperature) and holding it there would most likely ________.

Which of the following organisms reproduces by fission?

Females of many insect species, including honeybee queens, can store gametes shed by their mating partners in ________.

Asexual reproduction results in offspring that are genetically identical to their parent. What type of cell process occurs to generate this type of offspring?

An inactivating mutation in the progesterone receptor gene would likely result in ________.

The primary function of the corpus luteum is to ________.

Use the following information to answer the question. For your internship at the local zoo, you have been assigned to help with the new orangutan-breeding program. Little is known about orangutan reproductive hormones, but hormone feedback cycles are often the same in closely related animals. You have been asked to use your knowledge of the interactions of human reproductive hormones to recommend injections to promote ovulation in a female orangutan when a visiting male arrives for a brief breeding visit. Which of the following hormones would you use if you want to induce ovulation right away?

In male mammals, excretory and reproductive systems share

You decide to study two species of birds, both of which form monogamous pairs (one male and one female). In species 1, you find that the eggs in a pair's nest are in fact almost always the offspring of that pair. In species 2, you are surprised to find that many of the eggs in a nest were actually fathered by males of neighboring pairs. Apparently, mating outside of monogamous pairings is widespread in species 2. What would you expect to observe if you examined the reproductive tracts of the female birds in the species?

A vasectomy ________.

In humans, the follicular cells that remain behind in the ovary following ovulation become ________.

Which of the following structures in females is analogous in function to the vas deferens in males?

Use the following information to answer the question. For your internship at the local zoo, you have been assigned to help with the new orangutan-breeding program. Little is known about orangutan reproductive hormones, but hormone feedback cycles are often the same in closely related animals. You have been asked to use your knowledge of the interactions of human reproductive hormones to recommend injections to promote ovulation in a female orangutan when a visiting male arrives for a brief breeding visit. Which of the following hormones would you use if you want to induce ovulation in a few days?

Refer to the following figure, which diagrams the reproductive anatomy of the human female, to answer the question. In the figure, which letter points to the corpus luteum?