Genetics Module 1 Connect Quiz

.pdf

School

Northeastern University *

*We aren’t endorsed by this school

Course

2301

Subject

Biology

Date

Dec 6, 2023

Type

pdf

Pages

20

Uploaded by MegaProton12786

1. Award: 10 out of 10.00 points Score: 200/200 Points 100 % What is the difference between cross- and self-fertilization? In self-fertilization, the pollen from one plant is used to fertilize the egg from another plant. In cross-fertilization, the pollen from one plant is used to fertilize the egg of another plant. In cross-fertilization, insects are used to pollinate the plants, whereas in self-fertilization, the investigator pollinates the plants. In cross-fertilization, the pollen from one plant is used to fertilize the egg from the same plant. References Multiple Choice Learning Objective: 01.01.02 Describe how Mendel cross- fertilized and self- fertilized pea plants. Section: 1.01
2. Award: 10 out of 10.00 points What is the outcome of crossing two pure-breeding plants with antagonistic characters of traits? Only one characteristic will be seen, and it will be that of the female. Both characteristics will be seen in the progeny. Both characteristics will be seen in the progeny in a 3:1 ratio. Only one of the characteristics will be seen in the progeny. References Multiple Choice Learning Objective: 01.01.04 Predict the type of progeny produced by Mendel's crosses between pure- breeding plants with discrete, antagonistic traits, such as purple versus white flowers. Section: 1.01
3. Award: 10 out of 10.00 points What does the pattern of inheritance in this pedigree indicate about the rare disease allele? There is no indication that the disease allele is either dominant or recessive. The disease allele is not inherited but arises only by a new mutation in affected individuals. The disease allele is dominant. The disease allele is recessive. References Multiple Choice Learning Objective: 01.03.01 Analyze human pedigrees to determine whether a genetic disease exhibits recessive or dominant inheritance. Section: 1.03
4. Award: 10 out of 10.00 points Suppose that in plants, smooth seeds ( S ) is dominant to wrinkled seeds ( s ), and tall plants ( T ) is dominant to short plants ( t ). An F 1 plant from a mating between homozygous plants that were tall/smooth and short/wrinkled was crossed to the short/wrinkled parent. What proportion of the progeny are expected (according to the Mendel’s law of independent assortment) to be homozygous for short and wrinkled alleles? 1/4 1/16 0 1/2 1/8 References Multiple Choice Learning Objective: 01.02.03 Explain Mendel's law of independent assortment and how the 9:3:3:1 phenotypic ratio among the F2 of a dihybrid cross provides evidence for this law. Section: 1.02
5. Award: 10 out of 10.00 points Starting with the parental cross AA × aa , what proportion of the F 2 offspring is expected to be homozygous? None are homozygotes. 1/4 3/4 All are homozygotes. 1/2 References Multiple Choice Learning Objective: 01.02.01 Explain Mendel's law of segregation and how it predicts the 3:1 dominant-to- recessive phenotypic ratio among the F2 generation of a monohybrid cross. Section: 1.02
6. Award: 10 out of 10.00 points Assume that in guinea pigs, dark brown fur ( B ) is dominant to black fur ( b ). If you mate a homozygous black guinea pig with a heterozygous brown guinea pig, what proportion of the progeny will be black? 1/4 1/2 3/4 All of these choices are correct. None of these choices are correct. References Multiple Choice Learning Objective: 01.02.02 Distinguish between a monohybrid cross and a testcross. Section: 1.02
Your preview ends here
Eager to read complete document? Join bartleby learn and gain access to the full version
  • Access to all documents
  • Unlimited textbook solutions
  • 24/7 expert homework help