Biology Ch 10/12 Review

The law of segregation predicts which phenomenon during gamete formation?

• Dominant alleles will be passed on to gametes slightly more than half of the tim

• A single random allele from each pair of parent alleles will be passed on to the gamete.

• Two dominant alleles placed adjacently in the parent’s genome will pass on to different gametes.

• When both recessive and dominant alleles for a trait are present in the parent, both will be passed on to the same gamete.

Which explains the significance of meiosis in the development of gametes?

• Meiosis increases the number of offspring an organism can produce.

• Meiosis combines an egg and a sperm to form a zygote.

• Meiosis reduces the chromosome number by one-half.

• Meiosis produces identical daughter cells.

Red is dominant to white for flower color in a particular plant. If a red flowered plant (RR) is crossed with a white flowered plant (R'R'), what color will the offspring be?

• 100% red

• 100% white

• 50% white, 50% red

• 100% pink

Patty is a color-blind female due to a sex-linked recessive disorder. Patty’s husband has normal vision. What is the probability that their daughter or son will be color-blind?

• daughter : 0% and son : 0%

• daughter : 0% and son : 100%

• daughter : 100% and son : 0%

• daughter : 100% and son : 100%

Hemophilia is a sex–linked recessive trait. If a man with hemophilia marries a woman who is a carrier for the trait, what are the predicted phenotypes for their children?

• 1 carrier male: 1 affected male: 1 carrier female: 1 affected female

• 1 carrier male: 1 affected male: 1 carrier female: 1 normal female

• 1 normal male: 1 affected male: 1 carrier female: 1 affected female

• 1 normal male: 1 affected male: 1 carrier female: 1 normal female

the passing of genetic traits from parent to offspring.

• heredity
• trait
• gene
• allele

Tags

NGSS.HS-LS3-1

An allele whose trait always shows up in the organism when the allele is present.

• recessive allele
• dominant allele
• hidden allele
• present allele

Tags

NGSS.HS-LS3-1

An allele whose trait only shows up when no dominant allele is present.

• hidden allele
• dominant allele
• recessive allele
• present allele

one of the alternative forms of a gene that governs a characteristic, such as hair color

• allele
• gene
• trait
• DNA

Tags

NGSS.HS-LS3-2

an organism's appearance or other detectable characteristic

• genotype
• phenotype
• genetics
• heterozygous

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2