anatomy 24444444444

Question 1

The human genome consists of__________.
A) DNA, most of which encodes protein
B) DNA, most of which does not encode protein
C) DNA, most of which encodes RNA
D) protein, most of which does not encode DNA

Answer 1

B) DNA, most of which does not encode protein

Question 2

What is a gene?
A) DNA sequence that contains the information for producing one type of protein.
B) Structure that contains chromosomes.
C) Amino acid sequence that contains the information for producing a particular DNA
sequence.
D) Collection of all of the protein-encoding DNA sequences on a particular
chromosome.

Answer 2

A) DNA sequence that contains the information for producing one type of protein.

Question 3

Genetics is the study of__________.
A) sperm and eggs
B) the effect of the environment on health
C) inheritance of characteristics
D) DNA

Answer 3

C) inheritance of characteristics

Question 4

What processes result in the passing of genetic information from one generation to the next?
A) Mitosis and fertilization
B) Meiosis and fertilization
C) Mitosis and meiosis
D) Fertilization and cleavage

Answer 4

B) Meiosis and fertilization

Question 5

What two types of information are needed to predict the inheritance pattern of a trait?
A) How genes were distributed during meiosis, and how they come together at
fertilization.
B) The health of the mother and of the father.
C) How genes were distributed during mitosis, and whether the inherited alleles are
dominant or recessive.
D) The age at which the trait appears, and how the sex of the offspring affects the
expression of the trait.

Answer 5

A) How genes were distributed during meiosis, and how they come together at
fertilization.

Question 6

An individual who carries two identical alleles for a gene is said to be__________ for that
gene.
A) homozygous
B) heterozygous
C) aneuploid
D) trisomic

Answer 6

A) homozygous

Question 7

A trait that is determined by one or more genes and environmental factors is a(n)__________
trait.
A) sex-linked
B) recessive
C) completely penetrant
D) multifactorial

Answer 7

D) multifactorial

Question 8

Hemophilia A is an example of what type of genetic trait?
A) X-linked recessive trait
B) Autosomal dominant trait
C) Polygenetic trait
D) Multifactorial trait

Answer 8

D) Multifactorial trait

Question 9

The trait of__________ is an example of a sex-influenced trait.
A) pattern baldness
B) hemophilia A
C) colorblindness
D) hypertension

Answer 9

A) pattern baldness

Question 10

Which term describes a human cell with 46 chromosomes?
A) Aneuploid
B) Euploid
C) Polyploid
D) Haploid

Answer 10

B) Euploid

Question 11

What chromosomal abnormality is associated with Down syndrome?
A) Trisomy 21
B) XXY
C) Trisomy 18
D) Monosomy 18

Answer 11

A) Trisomy 21

Question 12

Which prenatal test will allow collection of a sample of the fetal genome without puncturing
the amniotic sac?
A) Amniocentesis
B) Chorionic villus sampling
C) Ultrasonography
D) Maternal serum marker screening

Answer 12

B) Chorionic villus sampling

Question 13

What occurs during an amniocentesis procedure?
A) A needle is used to remove cells from the fetus.
B) A small sample of the placenta is removed and examined for abnormal cells.
C) Fetal fibroblasts in amniotic fluid are cultured and a karyotype constructed.
D) Fetal cells found in a maternal blood sample are isolated and their chromosomes
karyotype

Answer 13

C) Fetal fibroblasts in amniotic fluid are cultured and a karyotype constructed.

Question 14

In treating genetic diseases,__________ can be a one-time treatment while__________
would need to continue throughout the patient’s lifetime.
A) gene therapy; protein-based therapies
B) enzyme replacement therapy; substrate reduction therapy
C) protein-based therapies; gene editing
D) pharmacological chaperone therapy; gene therapy

Answer 14

A) gene therapy; protein-based therapies