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WorksheetsMendelian and Modern Genetics
Total questions: 73
Worksheet time: 54mins
Name
Class
Date
1.
The technique illustrated in this diagram is known as
a)
protein synthesis
b)
genetic engineering
c)
internal fertilization
d)
cloning
2.
A change that alters the base sequence in an organism's DNA is a
a)
replication
b)
clone
c)
mutation
d)
zygote
3.
Genes carried on the X-chromosome are said to be
a)
codominant
b)
autosomal
c)
hybrid
d)
sex linked
4.
A technique used to create organisms with specific traits is known as
a)
cloning
b)
fertilization
c)
selective breeding
d)
direct harvesting
5.
One way to produce large numbers of genetically identical offspring is by
a)
cloning
b)
selective breeding
c)
fertilization
d)
hybridization
6.
A man with normal vision marries a woman with normal vision. Her father was color blind. If the couple has a daughter, what is the chance that this child will be colorblind?
a)
0%
b)
100%
c)
25%
d)
50%
7.
Down's Syndrome is caused by
a)
polyploidy
b)
nondisjunction
c)
segregation
d)
hybridization
8.
When a person's teeth are x-rayed, other parts of this person are covered by a protective blanket to prevent
a)
hair loss
b)
increase in cell size
c)
changes in DNA structure
d)
changes in glucose structure
9.
A man with Hemophilia and his wife have two sons with hemophilia. What is the woman's genotype?
a)
heterozygous
b)
homozygous
c)
monoploid
d)
trisomy
10.
Although scientists may have the technology to clone a human, this procedure has not been performed yet because
a)
It may cause mutations
b)
there are many ethical issues to consider
c)
they don't know who to clone
d)
it is against the law.
11.
A disease characterized by abnormally shaped red blood cells is
a)
sickle cell anemia
b)
hemophilia
c)
PKU
d)
Tay Sachs
12.
A picture of a person's entire genome is known as a
a)
DNA Fingerprint
b)
amniocentesis
c)
karyotype
d)
selective breeding
13.
Crossing different species to create a new species is known as
a)
inbreeding
b)
in vitro fertilization
c)
hybridization
d)
amniocentesis
14.
An organism that is genetically identical to the organism from which it was produced.
a)
clone
b)
meiosis
c)
sex cell
d)
Y chromosome
15.
All of the DNA in one cell of an organism.
a)
genome
b)
nitrogen bases
c)
mitosis
d)
replication
16.
The transfer of a gene from the DNA of one organism into another organism, in order to produce an organism with desired traits.
a)
genetic engineering
b)
hybridization
c)
meiosis
d)
cloning
17.
An abnormal condition that a person inherits through genes or chromosomes.
a)
genetic disorder
b)
disease
c)
pathogen
d)
mutation
18.
A selective breeding method in which two individuals with identical or similar sets of alleles are crossed.
a)
inbreeding
b)
hybridization
c)
genetic cross
d)
karyotype
19.
A picture of all the chromosomes in a cell arranged in pairs.
a)
karyotype
b)
genotype
c)
phenotype
d)
hybrid
20.
Three or more forms of a gene that code for a single trait.
a)
multiple alleles
b)
sex linked trait
c)
codominant
d)
crystalline allele
21.
A chart or “family tree” that tracks which members of a family have a particular trait.
a)
pedigree
b)
punnett square
c)
cladogram
d)
branching tree
22.
A pair of chromosomes carrying genes that determine whether a person is male or female.
a)
sex chromosomes
b)
sex genes
c)
gender chromosomes
d)
gender alleles
23.
What is this a picture of?
a)
colorblind chart
b)
carrier chart
c)
pedigree
d)
punnett square
24.
What does 'X linked' mean in the chart?
a)
the trait is found on every chromosome
b)
the trait is on all X chromosomes
c)
the trait is only found on an X sex chromosome
d)
the trait is for females only
25.
If colorblindness were a dominant trait, how many colorblind people would there be in this family?
a)
8
b)
6
c)
14
d)
not enough information
26.
What is the sex of all of the carriers?
a)
male
b)
female
27.
How many females are colorblind?
a)
1
b)
8
c)
6
d)
14
28.
What is one drawback to inbreeding?
a)
increase the chance of genetic disorders
b)
too many similar traits
c)
increase the chance of a mutation
d)
chance of genetically identical offspring
29.
A person who has one recessive allele for a trait, but does not have the trait.
a)
carrier
b)
homozygous dominant
c)
homozygous recessive
d)
codominant
30.
Which trait is controlled by a gene with multiple alleles?
a)
strait hairline
b)
blood type
31.
What is meant by the term multiple alleles?
a)
more than two genes that control a trait
b)
three or more forms of a gene that code for a single trait
32.
Why does height in humans have such a wide variety of phenotypes?
a)
It is controlled by multiple alleles.
b)
It only has two alleles.
33.
What controls variations in skin color among humans?
a)
diet
b)
many genes
c)
multiple alleles
34.
Which trait can be altered by the environment?
a)
hairline
b)
height
c)
dimples
d)
blood type
35.
What factors can effect a person's height?
a)
genes only
b)
genes and environment
36.
Which combination of sex chromosomes results in a male human being?
a)
XX
b)
YY
c)
XY
37.
Why are sex-linked traits more common in males?
a)
All alleles on the X chromosome are dominant.
b)
A recessive allele on the X chromosome will always produce the trait in a male.
38.
How does a geneticist use pedigrees?
a)
to create genetic crosses
b)
to trace inheritance of traits
39.
What is a pedigree?
a)
a chart that tracks traits in family members
b)
a picture of all the chromosomes in a cell
40.
Genetic disorders are caused by
a)
DNA mutations and changes in chromosomes
b)
dominant alleles
c)
recessive alleles
41.
Which genetic disorder causes the body to produce unusually think mucus in the lungs and intestines?
a)
hemophilia
b)
down syndrome
c)
cystic fibrosis
42.
What would be the way to predict the probability of a baby having cystic fibrosis?
a)
Studying a karyote
b)
studying a family pedigree
c)
exploring genetic engineering
43.
Cloning results in two organisms that are
a)
similar
b)
identical
44.
What is a genome?
a)
all cells produced during meiosis
b)
all the DNA in one cell of an organism
45.
Sex-linked genes are genes on
a)
the X chromosome
b)
the Y chromosome
c)
the X and Y chromosome
46.
When a potato that tastes good is crossed with a potato that resists disease, the technique is called?
a)
inbreeding
b)
hybridization
c)
crossbreeding
47.
A carrier is a person who has
a)
two dominant alleles for a trait
b)
two recessive alleles for a trait
c)
one recessive and one dominant allele for a trait
48.
Down syndrome most often occurs when
a)
a person inherits a recessive allele
b)
chromosome fail to separate properly
49.
what genetic disorder results in abnormally shaped blood cells?
a)
cystic fibrosis
b)
sickle-cell disease
50.
A ____________ is used to track the occurrence of a trait in a family.
a)
karyote
b)
pedigree
c)
genome
51.
Down syndrome is caused by the presence of an extra _______________.
a)
genome
b)
chromosome
52.
Breeders use the technique called ___________ to cross genetically different individuals.
a)
selective breeding
b)
hybridization
c)
cloning
53.
A gene from one organism is inserted into the DNA of another organism in the process known as
a)
cloning
b)
selective breeding
c)
genetic engineering
54.
What did Mendel call the two kinds of traits exhibited by the pea plants (one coming from the father, one from the mother)?
a)
Genesis
b)
Elective traits
c)
Alleles
d)
Quadrants
55.
What did Gregor Mendel use to discover the principles that rule heredity?
a)
Pea Plant
b)
Pigeons
c)
Pear trees
d)
Photosynthesis
56.
What do we call the result of the genotype (for example, the color of the peas)?
a)
Visible traits
b)
Physiotrait
c)
Genotype 2
d)
Phenotype
57.
What do we call the table used to calculate the probability of an offspring's genotype?
a)
Punnett square
b)
Venn diagram
c)
Golden ratio
d)
Fibonacci sequence
58.
Gregor Mendel is known as the father of _________
a)
Modern Medicine
b)
Father of the Green Revolution
c)
Father of Genitics
d)
The Pea Plant Man
59.
Which of the following is homozygous dominant?
a)
RR
b)
Rr
c)
rr
60.
Which of the following would produce a recessive phenotype?
a)
hh
b)
Rr
c)
Ww
d)
BB
61.
If Y (yellow) is the dominant allele for pea plant seed color, which of the following would produce green seeds?
a)
yy
b)
Yy
c)
YY
d)
gg
62.
Which of the following is NOT a trait you can inherit?
a)
your athletic ability
b)
your eye color
c)
your hairstyle
d)
your height
63.
Genetics is the study of
a)
anatomy
b)
heredity
c)
cardiology
d)
all of the above
64.
What gender has an X and a Y chromosome?
a)
male
b)
female
c)
transgender
d)
all of the above
65.
Which is a true statements about this picture?
a)
Brown is recessive
b)
Brown is dominant
c)
Blue is dominant
d)
Blue is codominant
66.
bb crossed with BB, what is the probability of Bb?
a)
0%
b)
25%
c)
50%
d)
100%
67.
A phenotype is the...
a)
letter combination
b)
dominant gene
c)
recessive gene
d)
physical appearance
68.
Which represents the genotype of a homozygous condition?
a)
Bb
b)
BC
c)
bb
d)
bc
69.
Which of the following genotypes is homozygous recessive?
a)
RR
b)
Rr
c)
rr
d)
None of the Above
70.
This type of inheritance pattern shows BOTH traits in possible offspring
a)
complete dominance
b)
incomplete dominance
c)
co-dominance
d)
dominant pattern
71.
When is a recessive allele expressed in offspring?
a)
when two copies are present
b)
when parents have no dominant alleles
c)
when the offspring is heterozygous
d)
when one copy is present
72.
Having two different alleles for a trait (example Hh):
a)
homozygous
b)
heterozygous
c)
dominant
d)
purebred
73.
Having two of the SAME alleles for a trait (example HH or hh):
a)
homozygous
b)
heterozygous
c)
recessive
d)
dominant
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