Science Assessment Blog 4/13
Which statement can be explained by Mendel’s law of dominance?
a. Heterozygous offspring will exibit the dominant trait in the phenotype.
b. During gamete formation, the two allelles responsible for the trait seperate.
c. Allelles from different traits are not distributed to sex cells independently of one another.
c. Alleles for different traits are not distributed to sex cells independently of one another.
d. Alleles for a trait are recombined at fertilization producing the genotype for the offspring.
2. Peas plants can have purple or white flowers. According to Mendel’s law of dominance, which factor determines the flower color in an offspring plant?
a. the parent that contributed to the offspring plant.
b. how useful each color is to the offspring plant.
c. if the color trait received is dominant or recessive.
d. the location of the color trait on the chromosome.
3. According to Mendel’s law of dominance, which statement discribes the result of a cross between two parents with genotype Ff and Ff.
a. offspring must have Ff to have three earlobes.
b. offspring must have FF to have attached earlobes.
c. offspring with at least one F alleles will have free earlobes.
d. offspring with at least one F allele will have attached earlobes.
4. One parent has blond hair and blue eyes. The other parent has brown hair and brown eyes. The couple has teo children with brown hair and blue eyes. According to Mendel’s law of independent assortment, which statemnet identifies how it is possible that the children’s features do not match the features of either parent?
a. the genes for one trait from one parent always stay together.
b. the parents each give alleles for half of their traits to each child.
c. Brown hair and blue eyes are dominant to blond hair and brown eyes.
d. The alleles for different traits are distributed seperately to the children.
5. In a certain type of flowering plant, the b allele codes for white-flower color, and the B allele codes for blue-flower color. The flowering plant produced a sex cell which includes a b gene. Which of the following best represents a possible genotypes present in the parent plant’s cells?
a. B
b. b
c. Bb
d. BB
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