Reproduction UIUC
Which of the following is true about the reproduction of the 9-banded armadillo?
Each embryo divides into 4 identical offspring.
Administering an additional amount of _________________ would lead to an increase in (hyperstimulation) of follicular growth and increase ovulation rate.
FSH
The hypothalamus produces
GnRH
Which of the following is not correct about the cervix of mammals?
It is located between the oviduct and the uterus
Which of the following hormones would terminate estrus?
LH
Which of the following is true of the corpus luteum (CL)?
The CL is filled with cells.
One example of an endocrine disruptor is:
bis phenol A (BPA)
The function of GnRH is
control LH and FSH release
Progesterone is a hormone produced by the:
corpus luteum
The function of FSH is to
encourage follicles to develop
In spontaneous ovulation, the preovulatory LH surge is induced by:
estradiol
The ovary produces:
estradiol
The increased production of _____________ causes behavioral changes in estrus.
estrogen
A major change in _____________ controls reproduction in seasonally polyestrus animals.
hours of sunlight each day
Two hormones produced by the developing embryo that alert the mother to pregnancy are:
interferon tau and hCG
Y bearing sperm have ________________ compared with X bearing sperm.
less DNA
Humans and some primates experience _______ cycles.
menstrual
In asexual reproduction, ___________________________.
offspring are clones of the parent
One advantage of sexual reproduction is that:
offspring are most genetically diverse
Receptors for protein hormones are located:
on the plasma membrane of cells
During ovulation, ovarian follicles release:
oocytes
In hermaphroditic reproduction:
organisms have both male and female reproductive organs
In ___________ animals, embryos are nourished by egg yolk.
oviparous
In __________animals, eggs remain inside of the mother until they are hatched.
ovoviparous
Lutenizing hormone (LH) controls all the following except:
preventing oocyte release from the follicle
Elevated ________ occurs in pregnant women.
progesterone and hCG
Which of the following triggers lysis of the corpus luteum in a non-pregnant animal?
prostaglandin F2-alpha
Species that are only able to conceive during certain times of the year are termed:
seasonally polyestrous
Which of the following is not a function of the epididymis?
sperm production
In ______________ ovulators, the preovulatory LH surge is induced by estradiol.
spontaneous
FSH is produced by
the anterior pituitary gland
LH is produced by
the anterior pituitary gland
The hypothalamus is located in
the brain
hCG is produced by
the developing embryo
GnRH is produced by
the hypothalamus
Estradiol is produced by
the ovary
What is one explanation for a person who appears to be female to have both an X and Y chromosome?
the person has a mutation on their Y chromosome
When embryos develop outside of the mother's body, they:
use nutrients in the yolk for development
The use of artificial insemination in the livestock industry allows producers to:
use semen with superior genetics
In pigs, the _________ is located between the vulva and cervix.
vagina
In ___________ animals, embryos are nourished by a placenta.
viviparous
Intracellular receptors bind to hormones that:
are fat-soluble
The master gene for sex determination in mammals is:
-Sry -located on the Y chromosome
The function of progesterone is:
-maintenance of pregnancy -suppression of ovulation
An endocrine disruptor can:
-mimic the effects of hormones -disrupt normal hormone signaling -cause tumors or birth defects
_________ produces a substance that blocks the destruction of the corpus luteum.
The developing embryo
Which of the following are required to clone an adult animal?
a cell from the animal to be cloned and an oocyte with the nucleus removed
What characteristic allows for sperm that produces male and female offspring to be separated from each other?
a difference in DNA content
A vesicle released by the sperm to penetrate the zona pellucida of an oocyte is:
acrosome
Intracelluar receptors bind to hormones that:
are fat-soluble
Which of the following is an example of a reflex ovulator?
cat