WorksheetsGenetics Exam Review
Total questions: 20
Worksheet time: 10mins
Which of the following traits are acquired, and not inherited?
Black frizzy hair
Blue eyes
Athleticism
Height
What happens to a recessive allele when a dominant allele is present?
The recessive trait takes over.
The recessive trait will not show.
The recessive and dominant traits will blend together.
You will have recessive traits in half your cells and dominant in the other half.
If a person is heterozygous for their genotype, which could they be?
BB
bb
Bb
If an animal has a purebred recessive genotype, which of the following could be their code?
TT
Tt
tt
TR
Which of the following describes a purebred genotype?
A child inherited the same allele from each parent.
A child inherited different alleles from each parent.
A child inherited the dominant allele from one parent and the recessive from the other
A genetic mutation occurred.
What is the opposite of purebred?
Dominant
Recessive
Homozygous
Hybrid
Can a child be born showing a phenotype that neither parent shows?
Yes
No
The color of your eyes is a ....
Allele
Gamete
Phenotype
Genotype
Each box in a punnett square shows:
One allele from a parent
The phenotype of the offspring
The possible genotypes of an offspring
Only the dominant trait
Any cell that has 23 chromosomes total is called...
Diploid
Sperm
Haploid
Zygote
What is a zygote?
A male sex cell
Any cell with 46 chromosomes
A female sex cell
A fertilized egg
Body cells have ____ chromosomes.
23 pairs of
46 pairs of
23
13
A gamete is....
A cell with 46 chromosomes
A sex cell
A body cell
A fertilized egg
For humans, how many chromosomes do you inherit from each parent?
46
23
23 pairs
46 pairs
Which of the following describes a difference between sexual and asexual reproduction?
Asexual reproduction requires 2 organisms while sexual involves more than 2.
Asexual reproduction results in genetic diversity, while sexual reproduction does not.
Asexual reproduction is only used in bacteria, while sexual reproduction is used in the other kingdoms of life.
Asexual reproduction results in genetic clones while sexual reproduction creates genetic diversity.
The following is an example of ___________________. A population of medium sized frogs increased because the large frogs are easily seen by predators and the small frogs cannot get enough food.
Selective breeding
Genetic engineering
Natural selection
Genetic modification
When farmers choose to only breed their chicken that produces the most eggs, this is referred to as ______________.
Natural selection
Selective breeding
Genetic modification
Genetic mutation
Which of the following correctly describes a genetic mutation?
When an organisms grown an extra body part that its not supposed to have.
When an organism is forced to breed with an organism that has a specific trait.
When an organism's DNA sequence gets messed up.
When an organism mates with a direct relative.
Which of the following is a concern with genetically engineered plants?
Plants could be resistant to pests.
The genes could spread to other plants creating superweeds.
Plants could be resistant to droughts.
Plants could produce higher yields of crops.
Which of the following is an advantage of genetically engineering plants?
They could take over the world.
They could grow in areas previously not able to support plant life.
They have not been tested long-term to know the side affects.
Their life span could increase.
