WorksheetsGenetics
Total questions: 50
Worksheet time: 27mins
Name
Class
Date
1.
____ means that alleles are the same.
a)
Homozygous
b)
Heterozygous
c)
Homologous
d)
Heterologous
2.
_____ case letters indicate that an allele is recessive
a)
Upper
b)
Lower
3.
____ are segments of DNA that control a particular trait.
a)
Centromere
b)
Genes
c)
Genome
d)
Chromosomes
4.
These are alleles for a trait that can be "covered."
a)
Recessive Alleles
b)
Dominant Alleles
c)
Codominant Alleles
d)
Incomplete Dominant Alleles
5.
_____ means that the alleles are different.
a)
Homozygous
b)
Heterozygous
c)
Homologous
d)
Heterologous
6.
Each square of a Punnett square indicates a possible _____.
a)
gamete
b)
zygote
7.
Where are chromosomes usually found in a cell?
a)
Cytoplasm
b)
Nucleolus
c)
Nucleus
d)
Nuclear Membrane
8.
The genetic make-up of an organism is the ____.
a)
genotype
b)
phenotype
9.
The traits exhibited by an organism is that organism's ____.
a)
phenotype
b)
genotype
10.
______ is seen when an offspring is the blend of two dominant alleles.
a)
Incomplete dominance
b)
Codominance
c)
Polygenic Inheritance
11.
_____ is seen when both parents have dominant alleles for a trait and both alleles are observed in the offspring.
a)
Incomplete dominance
b)
Codominance
c)
Polygenic inheritance
12.
These chromosomes indicate a male.
a)
XY
b)
XX
13.
These chromosomes indicate a female.
a)
XY
b)
XX
14.
____ case letters indicate that a trait is dominant.
a)
Upper
b)
Lower
15.
By what process does a parent pass on alleles to offspring?
a)
Mitosis
b)
Meiosis
16.
A _____ is a chart to show relationships in a family.
a)
Pedigree
b)
Punnett Square
c)
Karyotype
17.
A ___ is a tool to show the allele combinations that an offspring may receive.
a)
pedigree
b)
Punnett square
c)
karyotype
18.
Identify the following: RR
a)
Homozygous Dominant Genotype
b)
Heterozygous Genotype
c)
Homozygous Recessive Phenotype
d)
Heterozygous Phenotype
19.
Identify the following: Large, Green Leaves
a)
Genotype
b)
Phenotype
c)
Karyotype
20.
Using the letter A, determine the cross for the parents in the third generation. Determine this by observing the offspring in the fourth generation.
a)
Aa X Aa
b)
AA X AA
c)
Aa X AA
d)
aa X aa
21.
Observe the karyotype, determine if this is a karyotype for a human male or female OR if this the karyotype of a non-human male or female.
a)
Human Female
b)
Human Male
c)
Non-Human Female
d)
Non-Human Male
22.
Determine the genotype: Yellow flowers are recessive to purple flowers.
a)
PP
b)
Pp
c)
PP
pp
pp
d)
PY
23.
Residents of the planet Zygor have two colors for eyes, violet which is dominant to silver. A male from this planet is heterozygous for eye color and his wife has silver eyes. What are the chances of their offspring inheriting the recessive color for eyes?
a)
100%
b)
75%
c)
50%
d)
25%
24.
Sean recently married Susan. He is considered a purebred for the trait of long fingers. His wife Susan has the recessive trait of short fingers. With their genotypes, 50% of their offspring could have the phenotype of long fingers.
a)
TRUE
b)
FALSE
25.
If you toss a coin 100 times and it lands tails up each time, what is the probability that it will land tails up on the next toss?
a)
100%
b)
50%
c)
25%
d)
75%
26.
Another name for purebred is ____.
a)
hybrid
b)
homozygous
c)
heterozygous
27.
Another name for hybrid is ___.
a)
homozygous
b)
heterozygous
c)
purebred
28.
If one parent is homozygous recessive and the other is heterozygous, ____.
a)
all the offspring will exhibit the recessive trait
b)
50% of the offspring will exhibit the recessive trait
c)
all of the offspring will exhibit the dominant trait
d)
none of the offspring will exhibit the recessive trait
29.
If a horse has 32 chromosomes in its gametes, there will be ____ in the autosomal (body) cells.
a)
32
b)
16
c)
96
d)
64
30.
Actually inserting genes of one organism into another organism to get a desired trait is _____.
a)
genetic engineering
b)
selective breeding
31.
Mutations in organisms are usually harmful.
a)
TRUE
b)
FALSE
32.
Gene or chromosome mutations occurring during mitosis could be passed on to the next generation.
a)
TRUE
b)
FALSE
33.
Read the blurb then determined what caused the changes in this breed. (GSD stands for German Shepherd Dog.)
a)
Breeders selectively bred these animals to achieve desired traits.
b)
Breeders genetically engineered these animals to achieve desired traits.
c)
These changes occurred naturally, survival of the fittest.
34.
When a red radish is crossed with a white radish, the offspring will be purple. This is an example of _______.
a)
codominance
b)
incomplete dominance
c)
polygenic inheritance
35.
Radishes may be red, white, or purple. What would be the genotypes of the red, white and purple?
a)
RR, WW, RW
b)
RR, WW, PP
c)
RR, WW, pp
d)
RR, rr, Rr
36.
According to Mendel, there are ___ possible phenotypes.
a)
two
b)
three
c)
four
d)
six
37.
Radishes may be red, white, or purple. When a red radish is crossed with a purple radish, what percent of the offspring will have an allele for the white color?
a)
0%
b)
100%
c)
50%
d)
25%
38.
When a red camellia is crossed with a white camellia, the offspring will exhibit red and white markings. This is an example of _____.
a)
incomplete dominance
b)
codominance
c)
polygenic inheritance
39.
Camellias may be red, white, or red and white markings. What would be the genotypes for these?
a)
RR, WW, RW
b)
Rr, Ww, Mm
c)
RR, WW, MM
d)
RR, ww, Rw
40.
How many phenotypes are possible when a trait is expressed because of incomplete dominance?
a)
Two
b)
Three
c)
Six
d)
Four
41.
Camellias may be red, white, or red and white markings. When a red and white marked camellia is crossed with another camellia of the same phenotype, the offspring will have the following genotypic ratio.
a)
100% Red and White
b)
50% Red and 50% White
c)
50% Red and 50% Red/White
d)
25% Red, 50% Red/White, 25% White
42.
A carrier of a trait will not exhibit the trait, but may pass this trait to an offspring.
a)
TRUE
b)
FALSE
43.
A father of a child has blood type AB and the mother has blood type A. Which blood type would their child NOT have?
a)
0
b)
AB
c)
A,
d)
B,
44.
A mother has type A blood and a father has type B blood. Their child has type O blood. What would their genotypes have to be?
a)
BB X AA
b)
BO X AO
c)
BO X AB
d)
BB X AO
45.
Both a father and a mother have blood type O. Which of the following indicates the possible genotypes of any offspring?
a)
AB, OO
b)
AO, BO
c)
AO, BO, OO
d)
OO
46.
What are the chances of that a blood type O and blood type AB produce an offspring with blood type A?
a)
100%
b)
75%
c)
50%
d)
25%
47.
A heterozygous blood type A man marries a homozygous blood type B woman. Which of the following indicates the possible phenotypes of offspring?
a)
50%-AB, 50%-B
b)
75%-AB, 25%-B
c)
50%-A, 50%-B
d)
25%-AB, 75%-B
48.
A blood type B woman whose father was blood type O marries a blood type O man. What are the possible genotypes of any offspring?
a)
BB-50%, OO-50%
b)
BO-50%, OO-50%
c)
BO-100%
d)
OO-100%
49.
The phenotype for a red rose is?
a)
RR
b)
rr
c)
Red
d)
50%
50.
You adopted the cutest puppy with the recessive trait of clipped ears, but dogs with longer, floppy ears are more prized. You would like to breed your puppy when it matures. What genotype would a mate to your dog need to have to ensure getting the longer, floppy ears?
a)
EE
b)
ee
c)
Ee
100 %
