QUESTION 5 Robert Wadlow suffered from gigantism. He probably had a hormone-secr

Question

QUESTION 5

Robert Wadlow suffered from gigantism. He probably had a hormone-secreting tumor. Where was this tumor most likely located?

anterior pituitary

posterior pituitary

thyroid

adrenal cortex

10 points   

QUESTION 6

Which of the following is an example of parthenogenesis?

fragmentation of a sea start (new individual grows from one arm)

development of a chicken from an unfertilized egg

two sexes in a single fish

sex change in adult fish (female to male)

10 points   

QUESTION 7

You are studying two populations of rotifers. In Population 1, you find significantly higher genetic diversity than in Population 2. You also observe that females in Population 2 have significantly more offspring, most of which are haploid, whereas in Population 1, females have fewer diploid offspring. What is the most likely explanation of the differences between the rotifer populations?

Population 1 reproduces by budding while Population 2 reproduces by regeneration.

Population 1 reproduces by regeneration while Population 2 reproduces sexually.

Population 1 reproduces sexually while Population 2 reproduces by parthenogenesis.

Population 1 reproduces by parthenogenesis while Population 2 reproduces by budding

10 points   

QUESTION 8

If you were to inject a substance that prevents the hypothalamus from releasing GnRH near the end of the follicular phase of an otherwise normally functioning female, what would be the most likely result?

FSH and LH levels would not surge normally and ovulation would not occur

FSH levels would surge, but LH levels would not; normal ovulation would occur

FSH and LH levels would surge to levels above normal and hyperovulation (release of eggs from multiple follicles) would occur

SH would not surge, but LH would; ovulation would not occur

anterior pituitary

posterior pituitary

thyroid

adrenal cortex

Explanation / Answer

5. Anterior pituitary

Since anterior pituitary makes around 80% of the pituitary gland and is responsible for most of hormone secretion activities therefore, anterior pituitary is the right answer.

6. Development of chicken from an unfertilized eggs

Parthenogenesis occurs when offspring develops from unfertilized eggs therefore, development of chicken is an example of parthenogenesis

7. Reproduction is sexual in 1 while reproduction by parthenogenesis in population 2

Genetic diversity is achieved through sexual reproduction resulting in diploid individuals, which is the case with population 1 while higher number of offsprings with less diversity explain the case of parthenogenesis.

8. FSH and LH levels would not surge normally and ovulation would not occur

Gonadotropin releasing hormone is responsible for stimulating biosynthesis of FSH and LH. If the hypothalamus does not release GnRH due to injection of the substance then FSH and LH would not surge normally.

Related Questions

Navigate

• Browse (All)
• Browse Q
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.