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WorksheetsGenetics Review
Total questions: 15
Worksheet time: 8mins
No freckles (FF, Ff) is dominant to freckles (ff). Give the phenotype for the following alleles: Ff
homozygous dominant non-freckled
homozygous recessive freckled
heterozygous non-freckled
heterozygous freckled
Look at the Punnett square below. What percentage of the offspring will have black fur?
100%
25%
75%
50%
Using the Punnett square below, identify the genotypes of the parents to produce approximately 50% homozygous brown-eyed offspring and 50% heterozygous offspring. R=dominant (red eye), r=recessive (brown eye)
RR X RR
Rr X Rr
Rr X rr
RR X rr
Using "A" to represent the dominant trait and "a" to represent the recessive trait, what are the genotypes of mom and dad in the F1 generation? Hint: 25% of the offspring is recessive for short wings.
Mom: AA, Dad: AA
Mom: Aa, Dad: aa
Mom: aa, Dad: aa
Mom: Aa, Dad: Aa
In pea plants, the allele for having a round seed shape (R) is dominant to having a wrinkled seed shape (r). A homozygous dominant pea plant for having a round seed shape and a pea plant that is heterozygous are crossed. What are the possible phenotypes of the offspring?
All offspring will have round seeds.
Some offspring will have round seeds, and some will have wrinkled seeds.
All offspring will have wrinkled seeds.
None of the above.
How many chromosomes are in each human sex cell?
20
46
23
78
A __________ is created during fertilization when two ________ or gamete cells unite as one.
haploid; diploid
zygote; haploid
zygote; diploid
diploid; haploid
All new daughter cells that are created through meiosis are __________ from their parent cells.
clones
identical
different
mutated
The mathematical chance that something will happen is known as _________________ .
possibility
probability
percentage
product
During the cell cycle, if a cell is damaged and doesn't pass its checkpoints, what will happen?
It will undergo apoptosis (commits cellular suicide).
Continue to complete its cell cycle.
It will begin cell division.
It will restart the cell cycle and try again.
In genetics, which allele overpowers the other to express a trait?
The dominant allele overcomes the recessive allele.
The recessive allele overcomes the dominant allele.
Neither the dominant nor recessive alleles overcome one another.
The allele with the mutation overcomes the other allele.
Chromosomes that carry the same set of genes are called _________________.
homologous alleles
homologous genes
homologous zygotes
homologous chromosomes
Which of the following is NOT true about sexual reproduction?
It requires more energy & requires a mate.
It creates genetic variation, offspring tend to survive to adulthood.
It is used to create somatic cells.
It is used in human reproduction
According to the diagram below, which of the following is the correct process?
Mitosis
Binary Fission
Cell Recruitment
Meiosis
What is an organism’s appearance called?
Its genotype
Its phenotype
Its dominant trait
Its recessive trait
