AnswersCMS 2026-2027 Biology CREDIT RECOVERYApplied Genetics

Pretest Answers

10 verified answers1 views
1
Free Preview

Which is the result of breeding individuals of different parentage?

A
hybrid vigor
B
genetic disease
C
natural selection
D
genetic engineering
2
Free Preview

Each horizontal row in a pedigree chart represents

A
a generation.
B
several characteristics.
C
several siblings.
D
a mating.
3

Which of the statements best describes the response of finches to drought on the Galapagos Islands?

A
During drought, finches struggled to open harder seeds. All the scraping and pecking wore down their beaks, resulting in a reduced average beak depth.
B
During drought, only finches with larger-than-average beaks were able to crack the hard seeds that were available. These finches survived while smaller-beaked finches died, resulting in an increased average beak depth in the population.
C
During drought, finches with smaller beaks (and smaller bodies) had an advantage. With reduced food supplies, larger finches (with larger beaks) were more likely to starve. The result was a decrease in average beak depth.
D
During drought, individual finches saw that large, hard seeds were the only available food. To crack these harder seeds, individual finches grew their beaks larger, resulting in an increased average beak depth.
4

Which is an example of hybridization that would increase hybrid vigor?

A
choosing a mate for a purebred cat from another litter of offspring from the same mother and father
B
using genetic engineering to insert a gene for vitamin A in carrot plants
C
producing a litter of puppies by mating two dogs of different breeds
D
pollinating the flowers on a tomato plant with pollen from a plant of the same variety
5

Which term also describes selective breeding?

A
artificial selection
B
natural selection
C
overproduction of offspring
D
survival of the fittest
6

A breeder wanted to develop a new variety of potatoes that produces more of the vitamins found in the roots of carrots than in typical potatoes. What method of selective breeding would the breeder most likely use?

A
inbreeding
B
genetic engineering
C
hand pollination
D
hybridization
7

A new kind of seed plant has been found on a remote island. This plant has larger, harder seeds than those found on the Galapagos Islands. Which of the finch adaptations would be likely to arise on this new island?

A
Larger beaks
B
Longer legs
C
Shorter legs
D
Smaller beaks
8

Certain breeds of pets have weaknesses and live shorter lives because of

A
inbreeding.
B
reproduction.
C
natural selection.
D
genetic diversity.
9

Which is an example of selective breeding?

A
Comparing pea plants that have white flowers to green bean plants that have white flowers.
B
Transferring pollen from flowers on one pea plant to flowers on another pea plant.
C
Grinding the peas from a pea plant into flour to create new food products.
D
Planting peas in a garden one year and planting green beans the next year to enrich the soil.
10

Kip studies flower color in petunias, where the allele for red flowers, R, is dominant to the allele for white flowers, r. If Kip makes the cross RR x rr, the gametes that are produced

A
will all carry the r allele.
B
will all carry the R allele.
C
by one parent will carry R and by the other parent will carry r.
D
by one parent will carry Rr and by the other parent will carry rR.

Did you find these answers helpful?

More from this Course

lesson pretest
10 verified answers

Pretest

lesson pretest
10 verified answers

Pretest

lesson pretest
10 verified answers

Pretest

Pretest Answers — CMS 2026-2027 Biology CREDIT…