WorksheetsGenetics Review Biology
Total questions: 15
Worksheet time: 15mins
Which of the following is an example of a heterozygous genotype?
AA
Aa
aa
What do the alleles show in the picture?
Codominance
Dominance
Incomplete dominance
If a pink flower is crossed with a pink flower, what percent of their offspring are expected to be pink-flowered?
25%
75%
50%
When constructing a pedigree, what does a circle represent?
female
male
How many generations are in the pedigree?
1
2
3
Dominant alleles are represented by a:
Male gene
lowercase letter
recessive trait
capital letter
Aa, DD, bB, yy are all examples of
genotypes
phenotypes
In a heterozygous genotype, the ___________ allele takes over in the phenotype.
recessive
dominant
lower case letter
both
Which of the following genotypes is homozygous dominant?
A
Aa
AA
aa
Which of the following genotypes is heterozygous?
Bb
BB
bb
B
If a Mother with Type A (Ao) blood and a father with type O (oo) blood have children, what would be the percentage that their offspring would be Type B blood?
50%
0%
35%
Organisms that have 2 of the same alleles for a particular trait are said to be
heterozygous
hybrid
homozygous
Which of the following is an example of a homozygous recessive genotype?
AA
Aa
aa
aA
In a dihybrid cross, what is the expected phenotypic ratio of the offspring?
9:3:3:1
3:1
1:2:1
1:1
What is the function of a Punnett square in genetics?
To determine the physical traits of an organism
To predict the probability of certain traits in offspring
To identify the DNA sequence of a gene
To calculate the mutation rate in a population
