WorksheetsGenetics Review
Total questions: 25
Worksheet time: 13mins
Which represents a recessive allele?
A
B
C
d
Which is homozygous dominant?
BB
Bb
bb
Bw
How would you describe the genotype Gg?
Homozygous dominant
Homozygous recessive
Heterozygous
Green
What is the physical representation of a gene?
Phenotype
Genotype
Homozygous
Heterozygous
If a man is homozygous dominant for free ear lobes, could he have a child with attached ear lobes (without mutation)?
Yes
No
Maybe
6
What is it called when two alleles are dominant and phenotype is a mixture of the two alleles?
incomplete dominance
codominance
sex-linked
dominant/recessive
If two heterozygous parents have a child, what is the probability the child will be Bb?
0
25
50
75
Two black cows have a calf. One parent was homozygous dominant and the other was heterozygous. What are the possible genotypes of the calf?
100% black
50% black 50% brown
100% BB
50% BB 50% Bb
A heterozygous green plant and a yellow plant produce a seed. What are the chances the plant is yellow?
0%
25%
50%
75%
A red bull and a white cow reproduce via codominance. What color will the calf be?
White
Red
Brown
Roan
If a blue flower and a yellow flower create a seed with incomplete dominance, what will the new plant look like?
Blue and yellow
Green
Yellow
Blue
A roan horse fertilizes a white horse. What will be the genotype possibilities of the colt?
50% RW 50% WW
50% RR 50% RW
100% RW
75% RW 25% WW
If a man is colorblind (sex-linked) and his wife is a carrier, what are the chances of their child being colorblind?
0%
25%
50%
75%
What inheritance pattern could lead to a dark brown horse and a cream horse giving birth to a tan horse?
incomplete dominance
codominance
dominant/recessive
sex-linked
If a purple and white spotted flower and a white flower produce a seed, what are the chances the flower will be spotted?
0%
25%
50%
75%
A woman has hemophilia, a sex-linked trait. If the father does not have hemophilia, what are the odds their child has the disease?
0%
25%
50%
75%
A white rabbit is born to two brown rabbit parents. What are the genotypes of the parents?
BB and Bb
BB and bb
bb and Bb
Bb and Bb
If a woman heterozygous for type A blood and a man heterozygous for type B blood have a child, what are the possible blood types of the child?
A or B
A, B, or AB
A, B, AB, or O
Impossible to tell
A child was born with type O blood, but parents were both type A. What were the parents' genotypes?
ii and Ai
AA and AA
Ai and Ai
AA and ii
A boy is born colorblind, a sex-linked trait. From whom did he inherit this disorder?
his mother
his father
both
neither
Genes from one organism are removed and added to the genome of another in_____________.
Selective breeding
Artificial selection
Natural Selection
Transgenics
How many different phenotypes can result from a white flower and a red flower through incomplete dominance?
1
2
3
4
Sex-linked disorders are much more common in ____.
males
females
children
adults
If a heterozygous blue fish mates with a yellow fish and the inheritance pattern is dominant/recessive, What percentage of their babies will be yellow?
0
25
50
75
A _________ shows how a certain trait is passed down through generation.
Gene
Purina
Pedigree
Family tree
