WorksheetsBio 3.2.2 Review
Total questions: 17
Worksheet time: 24mins
a student is predicting whether the seeds of pea plants produced by the cross shown will be wrinkled (r) or round (R). This cross will produce what percentage of offspring?
100% round, 0% wrinkled
75% round, 25% wrinkled
50% round, 50% wrinkled
25% round, 75% wrinkled
What biological concept was Mendel studying when he crossed pea plants many times over many generations?
imbalance in ecosystems
predator-prey relationships
dominant and recessive traits
male and female genetic differences
The short leg trait of the Munchkin cat would be transmitted to the next generation of cats through
fats
nutrients
genes
mutations
A man has a recessive condition that neither of his parents expressed. His wife does not have this condition. However, she is a carrier. Based on this information, which Punnett square correctly predicts the probability that their children will have this genetic condition?
Sickle cell anemia is a condition that affects the shape of a red blood cell. An unaffected individual with the genotype AA. An affected individual can be represented with the genotype SS. Individuals that are carriers have the genotype AS.
Sickle cell anemia is best described by the term
incomplete dominance
multiple alleles
homozygous recessive
heterozygous dominant
Cystic fibrosis is a lethal, autosomal recessive genetic disorder. Which statement best explains how cystic fibrosis is maintained in the gene pool?
Organisms that are heterozygous can pass on only the dominant allele.
Organisms that are homozygous-dominant pass on either dominant or recessive alleles.
Organisms that are heterozygous can pass on either dominant or recessive alleles.
Organisms that are homozygous-recessive pass on only the dominant allele.
In fruit flies, red eyes are dominant over sepia eyes. A male with red eyes is crossed with a female with sepia eyes. Half of their offspring have sepia eyes and half have red eyes. What does this indicate about the flies that were crossed?
Both parents are homozygous for the trait.
Both parents are heterozygous for the trait.
The male is heterozygous and the female is homozygous recessive for the trait.
The male is homozygous dominant and the female is heterozygous for the trait.
What type of inheritance controls blood types in humans?
incomplete dominance
polygenic inheritance
multiple alleles
recessive genes
Vanessa crosses a white-flowered pea plant with pollen from a a purple-flowered pea plant. When the first generation of pea plants flowers, she records the number of offspring produced with each flower color. Vanessa's investigation is best designed to test which hypothesis?
Purple flowers survive longer than white flowers.
Purple flower color is a dominant trait in pea plants.
The number of offspring produced increases with each cross.
Flower color is determined by the number of offspring produced.
Which of the following is influenced by both genetics and behavior?
eye color
hair texture
blood type
body weight
Which trait of a pet dog is inherited?
the dog avoids a pet cat
the dog jumps on a sofa
the dog rolls over on command
the dog drools when it smells food
Genetics and the environment both play roles in cell differentiation. Which is the best example of an environmental factor influencing cell differentiation?
The cells of a chicken embryo divide to form three layers: the ectoderm, mesoderm, and endoderm.
The terminal bud on a runner of a strawberry plant begins growing roots when it contacts the ground.
Cambium cells in the trunk of an apple tree form rings of xylem and phloem annually.
During meiosis, a single cell divides to form four gametes with half the number of chromosomes that somatic cells have.
An animal's somatic cells contain 2n chromosomes. What happens to the number of chromosomes in the animal's gametes?
The number is reduced to n by mitosis.
The number is reduced to n by meiosis.
The number is increased to 4n by mitosis.
The number is increased to 4n by meiosis.
Match each genotype to its description
HOMOZYGOUS DOMINANT
RR
HETEROZYGOUS
Rr
HOMOZYGOUS
RECESSIVE
rr
Who was the Austrian monk that experimented on pea plants and is called the "father of genetics"? (a)
Different forms of a gene are called (a)
Match the following genotypes and allelles.
RR
Homozygous Dominant
Bb
Heterozygous
dd
Homozygous Recessive
G
Dominant Allele
g
Recessive Allele
