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WorksheetsGenetics 20-21
Total questions: 21
Worksheet time: 42mins
If purple flowers are dominant to white flowers. What is the probability of producing a purple flower offspring from a genetic cross between two heterozygous purple flower plants?
25%
50%
75%
100%
If two rabbits mate and one parent is homozygous dominant for brown fur and the other is homozygous recessive for white fur, what is the percentage chance that these two rabbits will produce an offspring with white fur?
0%
25%
50%
100%
If two heterozygous rabbits mate, what is the percentage chance that the offspring will have heterozygous alleles?
25%
50%
75%
100%
The gene for polka dots is dominant in monsters over the gene for stripes in monsters. What percent of offspring would be expected to have polka dots as a result of a cross between a heterozygous monsters?
100%
75%
50%
25%
Camilla created the pedigree diagram to show the occurrence of Tay Sachs in her family. Tay Sachs is a genetic disorder that appears from a homozygous recessive genotype (tt) that results in the destruction of nerve cells. Those who do not carry the gene for Tay Sachs are noted as (TT). According to the diagram, Camilla is one of five children. Camilla and one of her brothers do not carry the gene. She has a sister that has the disease.
Which of the following are the genotypes of Camilla's parents?
Tt and TT
Tt and Tt
tt and tt
tt and TT
Which of the following is not true about biotechnology?
It includes the use of living organisms
It is mainly used in agriculture, food science, and medicine
It is used to identify tire marks at a crime scene
It could use living organisms to make useful chemicals and products or to perform an industrial task.
Which of these choices is true about individual 4 in generation II?
Female and the mother of individual 3 in generation III.
Female and the daughter of individuals 1 & 2 in generation I.
Male and the father of individual 3 in generation III.
Male and the son of individuals 1 & 2 in generation I.
What is the molecule that provides a set of instructions that determines traits in an individual?
DNA
glucose
cellulose
cholesterol
The diagram shows the results of crossing a pea plant with yellow peas and a pea plant with green peas. What can be determined as a result of the experiment?
Pea plants with yellow seeds and pea plants with green seeds are both recessive.
Pea plants with yellow seeds and pea plants with green seeds are both dominant.
Yellow peas are a dominant trait and green peas are a recessive trait.
Green peas are a dominant trait and yellow peas are a recessive trait.
What are the genotypes of the parents?
Gg and Gg
Gg and gg
GG and gg
GG and Gg
A diagram of family relationships that includes several generations is a
pedigree
Punnett square
monohybrid cross
polyhybrid cross
A diagram that lists alleles of two parents and shows the possible allele combinations of their offspring
pedigree
Punnett square
Christopher and Maria are both carriers for a gene that causes a genetic disease/disorder called sickle cell anemia. What does this mean?
Both Christopher and Maria are immune to the disease and it is likely that their offspring will also be immune.
They both have an allele for the disease and could pass it onto their children, even though neither of them has the disease.
It is probable that one of them will develop the disease in the future.
They both have the disease but it is unlikely that they will pass it onto their offspring.
Gregor Mendel observed that two pea plants with purple flowers could produce offspring with white flowers. How did he explain these results?
genetic mutations
acquired traits
environmental conditions
dominant and recessive traits
Which of the following could not be an inherited trait?
Brown eyes
Red Hair
Curly Hair
Long Hair
What is the purpose of a Punnett square?
to diagram family relationships that include several generations
to explain why some genes are recessive and others are dominant
to compare inherited traits to acquired traits
to illustrate how the alleles of parents might be passed on to their offspring
A brown rabbit has a litter of kittens. Some of the kittens are brown and some are white. What is the most likely reason that some of the kittens look different from their mother?
the white kittens have mutated genetic material
some may look different because they received different traits from their father
the white kittens acquired the white fur after they were born
some kittens look different because not all traits are inherited through the genetic material
Both of Carter's parents have dimples but only one of Carter's brothers and sisters has dimples. If dimples are the result of a dominant allele (D), what are the genotypes of Carter's parents?
Dd and Dd
Dd and DD
Dd and dd
dd and dd
Purple pea plants are dominant over white pea plants. If a homozygous purple plant is crossed with a homozygous white plant, which of the following could describe the resulting offspring?
They would be homozygous for purple flowers
They would be homozygous for white flowers
They would be heterozygous for purple flowers
They would be heterozygous for white flowers
If an individual has the genotype Tt, they are
heterozygous dominant
heterozygous recessive
homozygous dominant
homozygous recessive
If Brown eyes (B) are dominant over green eyes (b), what is the percentage probability that these two parents will have a child with brown eyes?
25%
50%
75%
100%
