WorksheetsReview 7.L4A.2
Total questions: 10
Worksheet time: 3hrs 30mins
Brown fur (B) is dominant to white fur (b) in rabbits. Which genotype would result from two parents that are homozygous for brown fur?
BB
Bb
b
B
How is it possible for an organism to have a recessive phenotype for a trait such as white flowers in pea plants?
The organism inherits the recessive allele from one parent.
The organism inherits the recessive allele from both parents.
The organism fails to inherit the alleles for the trait from either parent.
The organism acquires the trait from the environment.
Which statement about these traits is true?
The table provides information about two inherited traits in plants, stem height, and flower color.
Stem height is dominant to flower color.
Flower color is dominant to stem height.
Tall stems and red flowers are dominant traits
Short stems and white flowers are dominant traits.
The table provides information about two inherited traits in plants, stem height, and flower color
What can be inferred about a plant with the genotype Rr?
The red-flowered plant inherited a dominant allele from both parents.
The white-flowered plant inherited a recessive allele from both parents.
The red-flowered plant inherited a dominant allele from one parent and a recessive allele from the other parent.
The white-flowered plant inherited a dominant allele from one parent and a recessive allele from the other parent.
In guinea pigs, an allele for rough fur (R) is dominant over an allele for smooth fur (r), and an allele for black coat (B) is dominant over an allele for white fur (b). What would be the genotype of a guinea pig with smooth black fur?
RR, BB
Rr, Bb
rr, bb
rr, BB
What does the genotype for a trait BB represent?
Each letter represents the dominant allele inherited from each parent.
Both letters represent the dominant allele inherited from the mother.
Both letters represent the recessive allele inherited from the father.
Each letter represents the recessive allele inherited from each parent.
Sarah noticed that both of her parents have widow's peaks, but she does not.
If her parents have another child, the child will have a 50% chance of having a widow's peak.
Her parents are heterozygous for the trait, and she inherited the recessive alleles.
The allele that codes for widow's peak is located on chromosome 14.
Her parents' genotypes must be homozygous for widow's peak.
Jackson’s mother and father both have normal blood cells, a dominant trait, while Jackson has sickle cell anemia, a recessive trait. Which genotype for sickle cell anemia represents each of Jackson’s parents’ traits?
Aa
AA
normal blood cells
sickle cell anemia
A mother has curly hair while a father has straight hair. Three of their four children have curly hair while one child has straight hair.
Which statement best explains the reason that three children have curly hair, and only one child has straight hair?
Three of the four children received the genes for hair texture only from their mother, and the gene for curly hair must be a dominant trait.
All four children received the genes for hair texture from both parents, but the gene for curly hair may be a dominant trait.
All four children received the genes for hair texture from both parents, but the gene for curly hair must be a recessive trait.
One of the four children received the genes for hair texture only from their father, and the gene for curly hair may be a recessive trait.
Vertebrate animals produce offspring by sexual reproduction. Which is an advantage of this type of reproduction?
Time and energy is used to find a mate in the population.
There is increased genetic diversity within the population.
The offspring grows faster than one that is produced asexually.
The offspring receives its DNA from one parent and is identical to that parent.
