Question 31 In the video, Ghost in Your Genes, rats that have been exposed to pe

Question

Question 31
In the video, Ghost in Your Genes, rats that have been exposed to pesticides in a laboratory setting are at an increased risk for cancer, as are their offspring and other descendants, even two or three generations down the line.
True
False

Question 32
In the video, Ghost in Your Genes, less-nurtured rat pups _________ than pups that were reared by a more nurturing mother. Researchers linked this to ___________.

were less social; epigenetic marks that resulted in under-expression of genes.

responded to stress in a more negative fashion; under-expression of genes that lower the levels of stress hormones.

were more prone to cancer; epigenetic changes that occurred in utero

had a greater risk for epilepsy; over-expression of genes that control neurotransmitter release in the hippocampus

Question 33
Which of the following is an example of X-inactivation?

Angelman Syndrome (AS)

the calico cat

Prader Willi Syndrome (PWS)

Cystic fibrosis

Question 34
Non disjunction of chromosome number 21 results in

Down Syndrome

Tay sachs

Cri Du Chat

Klinefelter Syndrome

Question 35
Which of the following statements explains why fatigue is a side effect of chemotherapy?

Chemotherapy affects centers in the heart that are responsible for maintaining alertness.

The gamma rays used in chemotherapy harm many cell types, contributing to fatigue.

Chemotherapy targets all rapidly dividing cells, including those in the red bone marrow.

all of the above

Question 36
If a cancer has metastasized,

it has spread to a new location in the body

it is in remission

it is benign

it cannot grow any larger

Question 37
The p53 gene

codes for a protein that can initiate apoptosis

codes for a protein that can initiate the repair of damaged DNA

is associated with many types of cancer (if mutated)

all of the above

none of the above

Question 38
Cells that never divide are said to be in the __________ phase.

G2

G0

S

G1

M

Question 39
In humans, pointed eyebrows (B) are dominant over smooth eyebrows (b). Mary and her father have smooth eyebrows, but her mother has pointed eyebrows. What is the genotype of the mother?

BB

Bb

bb

BBbb

Any of the above could be correct.

Question 40
Which of the following describes the underlying cause of severe combined immunodeficiency syndrome (SCIDS)?

lack of the Hex-A (hexosaminidase A) enzyme

lack of functional chloride channels

lack of the ADA (adenosine deaminase) enzyme

all of the above

Question 41
If parents, that both have a particular disorder, have a child who does not have that same disorder, the trait involved must be an example of ____________ inheritance.

X-linked

co-dominant

autosomal dominant

autosomal recessive

Question 42
The larger a gene fragment, the faster it travels toward the positive end of a gel during electrophoresis.
True
False

Question 43
The process of converting a strand of mRNA into a protein is called

DNA replication

transcription

translation

polymerase chain reaction

Question 44
During development (in utero), one of the X chromosomes in every female body cell will typically inactivate. The inactivated X chromosome is referred to as

a barr body

non disjunction

a homolog

poly X syndrome

Question 45
A cancerous cell may have which of the following characteristics?

Tumor suppressor genes are mutated.

Proto-oncogenes are mutated.

The enzyme telomerase is active.

It no longer looks like the tissue from which it originally came.

all of the above

Question 46
If one parent has type A blood and the other has type B, their offspring could potentially have which of the following blood types?

type A

type B

type O

type AB

all of the above

Question 47
In humans, a widow’s peak (W) is dominant over a smooth hairline (w). Suzy’s father has a widow’s peak, but she and her mother have a smooth hair line. What is the genotype of the father?

WW

Ww

ww

WWww

Any of the above could be correct.

Question 48
Which of the following is an example of a proto-oncogene?

a gene that encodes a repressor

the BRCA#1 gene

the cyclin gene

the p53 gene

Question 49
Genes that are imprinted

are silenced

are mutated

are over active

cause cancer

all of the above

Question 50
Cystic fibrosis is caused by

lack of regular exercise

non functional chloride channels

lack of adenosine deaminase (ADA)

high cholesterol

Question 51
Apoptosis

is programmed cell death

is a term that describes uncontrolled cell division

is when a cell stops dividing because it has differentiated

refers to growth of a tumor

Question 52
The accidental mispairing of complementary nitrogenous bases during the process of DNA replication creates what is known as a __________, if it is not corrected.

exon

introns

mutation

nucleotide

Question 53
Of the following human chromosomes, which is the smallest autosome?

the X chromosome

the Y chromosome

chromosome # 1

chromosome # 14

chromosome # 22

Question 54
Which of the following is an example of incomplete dominance?

blood type O

wavy hair

attached ear lobes

blood type AB

Question 55
Nondisjunction occurs when _____________.

homologous pairs do not separate in meisis I.

crossing-over occurs in sister chromatids.

sister chromatids do not separate in mitosis or meiosis II.

the tetrads form.

Both A and C are correct

Question 56
An individual with Klinefelter Syndrome would

be female

have 47 chromosomes

be sterile

have severe mental retardation

have an extra Y chromosome

Question 57
mRNA is altered before it leaves the nucleus. Which if the following correctly states how it is changed.

uracil is replaced with thymine

introns are removed

carbohydrate chains are added

the phosphate groups are removed

Question 58
The G2 check point of the cell cycle

assesses the proper alignment of chromosomes during metaphase

assesses cell growth to decide if the cell is ready to replicate the DNA

checks for complete division of the two new daughter cells

checks for the success of DNA replication

Question 59
Which of the following procedures can be used to determine if an individual was at a crime scene?

DNA fingerprinting

gene therapy

exocytosis

all of the above

Question 60
Epigenetics can best be defined as

a change in gene expression not caused by a change in the nucleotide sequence

a change in gene expression caused by a change in the nucleotide sequence

the genome of an individual with a disorder

the accumulation of mutations that occurs through out a lifetime

Explanation / Answer

Answer:

Question 31: In the video, Ghost in Your Genes, rats that have been exposed to pesticides in a laboratory setting are at an increased risk for cancer, as are their offspring and other descendants, even two or three generations down the line.

Question 32: In the video, Ghost in Your Genes, less-nurtured rat pups _________ than pups that were reared by a more nurturing mother. Researchers linked this to ___________.

Question 33: Which of the following is an example of X-inactivation?

Question 34: Non disjunction of chromosome number 21 results in

Question 35: Which of the following statements explains why fatigue is a side effect of chemotherapy?

Question 36: If a cancer has metastasized,

Question 37: The p53 gene

Question 38: Cells that never divide are said to be in the __________ phase.

Question 39: In humans, pointed eyebrows (B) are dominant over smooth eyebrows (b). Mary and her father have smooth eyebrows, but her mother has pointed eyebrows. What is the genotype of the mother?

Question 40: Which of the following describes the underlying cause of severe combined immunodeficiency syndrome (SCIDS)?

Question 41: If parents, that both have a particular disorder, have a child who does not have that same disorder, the trait involved must be an example of ____________ inheritance.

Question 42: The larger a gene fragment, the faster it travels toward the positive end of a gel during electrophoresis.

Question 43: The process of converting a strand of mRNA into a protein is called

Question 44: During development (in utero), one of the X chromosomes in every female body cell will typically inactivate. The inactivated X chromosome is referred to as

Question 45: A cancerous cell may have which of the following characteristics?

Question 46: If one parent has type A blood and the other has type B, their offspring could potentially have which of the following blood types?

Question 47: In humans, a widow’s peak (W) is dominant over a smooth hairline (w). Suzy’s father has a widow’s peak, but she and her mother have a smooth hair line. What is the genotype of the father?

Question 48: Which of the following is an example of a proto-oncogene?

Question 49: Genes that are imprinted

Question 50: Cystic fibrosis is caused by

Question 51: Apoptosis

Question 52: The accidental mispairing of complementary nitrogenous bases during the process of DNA replication creates what is known as a __________, if it is not corrected.

Question 53: Of the following human chromosomes, which is the smallest autosome?

Question 54: Which of the following is an example of incomplete dominance?

Question 55: Nondisjunction occurs when _____________.

Question 56: An individual with Klinefelter Syndrome would

Question 57: mRNA is altered before it leaves the nucleus. Which if the following correctly states how it is changed.

Question 58: The G2 check point of the cell cycle

Question 59: Which of the following procedures can be used to determine if an individual was at a crime scene?

Question 60: Epigenetics can best be defined as

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