Question

1. Menstruation ______.

   	a.	involves shedding of the endometrium
   	b.	occurs after ovulation but prior to degeneration of the follicle
   	c.	is triggered by an LH surge
   	d.	is triggered by an increase in the levels of estrogen and progesterone
   	e.	is stimulated by HCG

QUESTION 22

1. In the figure shown here, which of the following is the ovary?

   
   

   	a.	C
   	b.	B
   	c.	E
   	d.	A
   	e.	D

QUESTION 23

1. Please read the following scenario to answer the following question(s).
   
   Widow's peak, a pointed hairline on the forehead, is a genetic trait caused by a dominant allele. It can be traced back through a family's history using pedigree analysis. The pedigree given here shows three generations of a family - some individuals have a widow's peak. ( W = dominant allele and w = recessive allele)
   
   
   
   
   
   Tamara has the genotype ______.

   	a.	www
   	b.	WW
   	c.	Ww
   	d.	ww
   	e.	WWW

QUESTION 24

1. What is the key to the recognition of incomplete dominance?

   	a.	The trait exhibits a continuous distribution.
   	b.	The alleles affect more than one trait.
   	c.	The dominant allele is not always expressed.
   	d.	The heterozygote expresses the phenotype of both homozygotes.
   	e.	The heterozygote expresses a third phenotype.

QUESTION 25

1. An individual who is homozygous recessive ______.

   	a.	expresses the recessive trait
   	b.	only a and b are true
   	c.	is a carrier of a genetic disorder
   	d.	carries two copies of the same allele for a gene
   	e.	all of the above are true

QUESTION 26

1. Please read the following scenario to answer the following question(s).
   
   Widow's peak, a pointed hairline on the forehead, is a genetic trait caused by a dominant allele. It can be traced back through a family's history using pedigree analysis. The pedigree given here shows three generations of a family - some individuals have a widow's peak. ( W = dominant allele and w = recessive allele)
   
   
   
   
   
   Janice's genotype is _______.

   	a.	WwW
   	b.	WW
   	c.	WW or Ww
   	d.	Ww
   	e.	Ww or ww

  

QUESTION 27

1. Chromosomes that are not sex chromosomes are called ______.

   	a.	centrosomes
   	b.	nonsexosomes
   	c.	allosomes
   	d.	autosomes
   	e.	centromeres

QUESTION 28

1. Straight hair is recessive to curly hair. What phenotypic ratio is expected when an individual with straight hair mates with an individual heterozygous for curly?

   	a.	9:3:3:1
   	b.	3:1
   	c.	1:1
   	d.	2:1
   	e.	1:2:1

  

QUESTION 29

1. In a person with AB blood type, the expression of the A and B alleles is equal. This is an example of:

   	a.	complete dominance
   	b.	non-disjunction
   	c.	polygenic inheritance
   	d.	X-linked inheritance
   	e.	codominan

QUESTION 30

1. All the offspring of a cross between a red-flowered plant and a white-flowered plant have pink flowers. This means that the allele for red flowers is ______ to the allele for white flowers.

   	a.	dominant
   	b.	codominant
   	c.	pleiotropic
   	d.	incompletely dominant
   	e.	recessive

Answer 1

Menstruation is involves the shedding of the endometrium

It is monthly, regular discharge of cell debris, blood, and mucosal tissue from the inner lining of the uterus (endometrium).

The menstrual cycle is regulated by hormones. Luteinizing hormone (LH) and follicle-stimulating hormone (FSH) are produced by the pituitary gland, promote ovulation and stimulate the ovaries to produce estrogen and progesterone.

Estrogen and progesterone stimulate the uterus and breasts to prepare for possible fertilization