Review Game Zone
Flash Cards
(current)
Games
Teachers
Search
Modern Genetics
Test Description: Advances in genetics
Instructions: Answer all questions to get your test result.
1) Which combination of sex chromosomes results in a male human being?
A
XY
B
XX
C
YY
D
either XX or XY
2) Why are sex-linked traits more common in males than in females?
A
All alleles on the Y chromosome are recessive.
B
A recessive allele on the X chromosome will always produce the trait in a male.
C
Any allele on the Y chromosome will be codominant with the matching allele on the X chromosome.
D
All alleles on the X chromosome are dominant.
3) What is a pedigree?
A
a picture of all of the chromosomes in a cell
B
a chart that tracks which members of a family have a particular trait
C
a geneticist who studies the inheritance of traits in humans
D
an allele passed from parent to child on a sex chromosome
4) How does a geneticist use pedigrees?
A
to create genetic crosses
B
to trace the inheritance of traits in humans
C
to prove that sex-linked traits are caused by codominant alleles
D
to replicate identical strings of DNA
5) Sex-linked genes are genes on
A
the Y chromosome only.
B
the X chromosome only.
C
the X and Y chromosomes.
D
all 23 pairs of chromosomes.
6) A carrier is a person who has
A
two dominant alleles for a trait.
B
two recessive alleles for a trait.
C
more than two alleles for a trait.
D
one recessive and one dominant allele for a trait.
7) What must occur for a girl to be colorblind?
A
Each parent must have two codominant alleles for colorblindness.
B
Each parent must be colorblind.
C
Each parent must have the dominant allele for colorblindness.
D
Each parent must have the recessive allele for colorblindness.
8) Genetic disorders are caused by
A
recessive alleles only.
B
pedigrees.
C
dominant alleles only.
D
DNA mutations or changes in chromosomes.
9) Which genetic disorder causes the body to produce unusually thick mucus in the lungs and intestines?
A
hemophilia
B
cystic fibrosis
C
sickle-cell disease
D
Down syndrome
10) What is a karyotype?
A
a picture of the chromosomes in a cell
B
a picture of a baby before it is born
C
fluid that surrounds a baby before it is born
D
a sex-linked genetic disorder
11) What genetic disorder results in abnormally shaped blood cells?
A
codominant allele.
B
recessive allele on the X chromosome.
C
dominant allele.
D
extra chromosome.
12) Hemophilia is caused by a(an)
A
chromosomes fail to separate properly during meiosis.
B
sickle-shaped cells become stuck in blood vessels.
C
a person inherits a recessive allele.
D
blood fails to clot properly.
13) Down syndrome most often occurs when
A
a chromosome is missing in a gene
B
chromosomes fail to separate during meiosis
C
DNA does not replicate
D
fluid builds up in the lungs
14) Cloning results in two organisms that are
A
genetically similar.
B
both adult mammals.
C
genetically identical.
D
produced from cuttings.
15) What is the purpose of the Human Genome Project?
A
growing a new plant from a cutting
B
analyzing karyotypes and pedigree charts
C
cross-breeding to create disease-resistant crops
D
creating human insulin to treat people with diabetes
16) Which of these is an example of the benefits of genetic engineering?
A
all the cells in an organism
B
all the DNA in one cell of an organism
C
all the DNA in every cell of all organisms
D
all the proteins a cell can make
17) All of the following statements are reasons for selective breeding except:
A
to clone every gene on a single chromosome in human DNA
B
to identify the sequence of every gene in a human cell.
C
to cure genetic diseases
D
to inbreed the best genes on every chromosome in human DNA
18) What is a genome?
A
To increase migration patterns
B
Farmers increase their profit by improving crops
C
To improve the quality of food products
D
To produce offspring with desirable characteristics
19) Meyer lemons, originating in China, are a cross between a true lemon tree and mandarin orange tree. The fruit is much sweeter than traditional lemons, which makes this variety a favorite of gardeners and chefs alike. This is an example of
A
selective breeding
B
cloning
C
genetic engineering
20) Which form of selective breeding crosses parents with the same or similar sets of alleles?
A
hybridization
B
cloning
C
fertilization
D
inbreeding
*select an answer for all questions
Check Results & Get Answers
Play Games with the Questions Above
Teachers: Create FREE classroom games with your questions
Click for more info!
©2007-2024
ReviewGameZone.com
|
About
|
Privacy
|
Contact
|
Terms
|
Site Map
WAIT! Find what you needed?
×
Still Looking for the Answers?
Have Another Question?
Play a Review Game with These Questions?
Want to Make Your Own Test Like This One?