Mendel’s principle of segregation refers to the
a. separation of alleles for a particular trait during gamete formation.
b. independent behavior of alleles for different traits during gamete formation.
c. difference of alleles for a trait in a heterozygous genotype.
d. expression of phenotype in an individual.
Mendel’s principle of segregation refers to the
a. separation of alleles for a particular trait during gamete formation.
b. independent behavior of alleles for different traits during gamete formation.
c. difference of alleles for a trait in a heterozygous genotype.
d. expression of phenotype in an individual.
a. separation of alleles for a particular trait during gamete formation.
When an individual heterozygous for a trait is crossed with an individual homozygous recessive for the trait, the offspring produced will
a. all have the same genotype.
b. show two different phenotypes.
c. show three different phenotypes.
d. all have the same phenotype.
a. all have the same genotype.
In humans, having freckles (F) is dominant to not having freckles (f). The inheritance of these traits can be studied using a Punnett square similar to the one shown below.
Refer to the illustration above. The child represented in box 1 in the Punnett square would
a. be homozygous for freckles.
b. have an extra freckles chromosome.
c. be heterozygous for freckles.
d. not have freckles.
In humans, having freckles (F) is dominant to not having freckles (f). The inheritance of these traits can be studied using a Punnett square similar to the one shown below.
Refer to the illustration above. The child represented in box 1 in the Punnett square would
a. be homozygous for freckles.
b. have an extra freckles chromosome.
c. be heterozygous for freckles.
d. not have freckles.
a. be homozygous for freckles.
In humans, having freckles (F) is dominant to not having freckles (f). The inheritance of these traits can be studied using a Punnett square similar to the one shown below.
Refer to the illustration above. The parents shown in the Punnett square could have children with a phenotype ratio of
a. 1:2:1.
b. 4:0.
c. 3:1.
d. 2:2.
In humans, having freckles (F) is dominant to not having freckles (f). The inheritance of these traits can be studied using a Punnett square similar to the one shown below.
Refer to the illustration above. The parents shown in the Punnett square could have children with a phenotype ratio of
a. 1:2:1.
b. 4:0.
c. 3:1.
d. 2:2.
c. 3:1.
Mendel discovered principles of inheritance because he
a. observed simultaneously all of the characteristics in which parents differed.
b. believed that hereditary characteristics of two individuals blended in the offspring.
c. ignored all characteristics except a few markedly contrasting ones that he studied carefully.
d. studied only the offspring obtained from a single mating.
Mendel discovered principles of inheritance because he
a. observed simultaneously all of the characteristics in which parents differed.
b. believed that hereditary characteristics of two individuals blended in the offspring.
c. ignored all characteristics except a few markedly contrasting ones that he studied carefully.
d. studied only the offspring obtained from a single mating.
c. ignored all characteristics except a few markedly contrasting ones that he studied carefully.
In rabbits, black fur (B) is dominant to brown fur (b). Consider the following cross between two rabbits.
Refer to the illustration above. The device shown, which is used to determine the probable outcome of genetic crosses, is called a
a. Mendelian box.
b. Punnett square.
c. genetic graph.
d. phenotypic paradox.
In rabbits, black fur (B) is dominant to brown fur (b). Consider the following cross between two rabbits.
Refer to the illustration above. The device shown, which is used to determine the probable outcome of genetic crosses, is called a
a. Mendelian box.
b. Punnett square.
c. genetic graph.
d. phenotypic paradox.
b. Punnett square.
When Mendel crossed true-breeding tall plants with true-breeding short plants, all the offspring were tall because
a. the allele for tall plants is recessive.
b. the allele for short plants is dominant.
c. the allele for tall plants is dominant.
d. they were true-breeding like their parents.
c. the allele for tall plants is dominant.
In humans, having freckles (F) is dominant to not having freckles (f). The inheritance of these traits can be studied using a Punnett square similar to the one shown below.
Refer to the illustration above. Which box in the Punnett square represents a child who does not have freckles?
a. box 1
b. box 2
c. box 3
d. box 4
In humans, having freckles (F) is dominant to not having freckles (f). The inheritance of these traits can be studied using a Punnett square similar to the one shown below.
Refer to the illustration above. Which box in the Punnett square represents a child who does not have freckles?
a. box 1
b. box 2
c. box 3
d. box 4
d. box 4
In mating pea plants with wrinkled seeds and pea plants with round seeds, Mendel found the F1 offspring produced only green pods. Mendel suggested that the yellow trait
a. skips every other generation.
b. blends with the round to produce a slightly wrinkled green pod.
c. permanently disappears from the breeding line.
d. is not expressed when its factor is present in combination with the round factor.
In mating pea plants with wrinkled seeds and pea plants with round seeds, Mendel found the F1 offspring produced only green pods. Mendel suggested that the yellow trait
a. skips every other generation.
b. blends with the round to produce a slightly wrinkled green pod.
c. permanently disappears from the breeding line.
d. is not expressed when its factor is present in combination with the round factor.
d. is not expressed when its factor is present in combination with the round factor.
Mendel’s above explanation is best supported by which evidence?
a. A cross of the F1 offspring produced 50% plants with round seeds.
b. Twenty-five percent of the offspring of the F1 cross produced wrinkled seeds.
c. Repeated crosses between plants with wrinkled and round seeds produced only plants with round seeds.
d. When true-breeding plants with wrinkled seeds self-fertilize, they produce only plants with wrinkled seeds.
Mendel’s above explanation is best supported by which evidence?
a. A cross of the F1 offspring produced 50% plants with round seeds.
b. Twenty-five percent of the offspring of the F1 cross produced wrinkled seeds.
c. Repeated crosses between plants with wrinkled and round seeds produced only plants with round seeds.
d. When true-breeding plants with wrinkled seeds self-fertilize, they produce only plants with wrinkled seeds.
b. Twenty-five percent of the offspring of the F1 cross produced wrinkled seeds.
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