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- 1. Multiple ChoiceOne of the main reasons genes assort independent of one another is thatthey produce unrelated traitsthey produce related traitsthey are on the same chromosomethey are on different chromosomes.
- 2. Multiple ChoiceA single gene has 3 or more alternative forms. These are calledheterozygotesmultiple allelesepistaticpolygenic
- 3. Multiple ChoiceA child has type O blood, if mother has type A blood, what would the fathers blood type beA,B, or OAB or AAB or BO only
- 4. Multiple ChoiceIn mice, the homozygous mice are black and white. The heterozygous mice are gray. What pattern of inheritance is expressed in fur color in mice?complete dominance and recessivenessco-dominanceincomplete dominancepleiotropy
- 5. Multiple ChoiceIf the parents of a cross are AaBcCc x aaBBcc. What is the probability of an offspring that is homozygous recessive for all 3 traits?1/641/321/8O
- 6. Multiple ChoiceIf a female was a carrier for sex-linked color blindness, what percentage of her male children would also be color blind?0%25%50%100%
- 7. Multiple ChoiceA man who has a sex-linked allele will pass it on toall his daughtersall his sons1/2 of his daughters1/2 of his sons
- 8. Multiple ChoiceRed x white = pinkcodominancemultiple allelesincomplete dominanceepistasis
- 9. Multiple ChoiceIn peas, the trait for tall plants is dominant (T) and the trait for short plants is recessive (t). The trait for yellow seeds is dominant (Y) and the trait for green seeds is recessive (y).
A cross between two plants results in 292 tall, yellow plants and 103 short, green plants. What are the most likely genotypes of the parents?TtYY x TtyyTTYy x TTYyTTyy x TTYyTtYy x TtYy - 10. Multiple Choice
When crossing a homozygous recessive with a heterozygote, what is the chance of getting an offspring with the homozygous recessive phenotype?
0%
25%
50%
75%
100%
- 11. Multiple Choice
This pedigree chart is for a family, some of whose members exhibit the recessive trait, woolly hair. Affected individuals are indicated by an open square or circle. What is the likelihood that the progeny of D-3 and D-4 will have wooly hair?
0%
25%
50%
75%
100%
- 12. Multiple Choice
Gene S controls the sharpness of spines in a type of cactus. Cactuses with the dominant allele, S, have sharp spines, whereas homozygous recessive ss cactuses have dull spines. At the same time, a second gene, N, determines whether or not cactuses have spines. Homozygous recessive nn cactuses have no spines at all. The relationship between genes S and N is an example of
epistasis
incomplete dominance
complete dominance
pleiotropy
- 13. Multiple Choice
Which of the following is an example of polygenic inheritance?
pink flowers in snapdragons
The ABO Blood group in humans
Skin color in humans
Huntington's disease in humans
- 14. Multiple Choice
A new species of tulip was recently discovered. A population of pure red tulips was crossed with a population of pure blue tulips. The resulting F1 generation was all purple. This result is an example of which of the following?
Complete dominance
Incomplete dominance
Co-dominance
Linkage
- 15. Multiple Choice
Which of the following provides an example of epistasis?
Recessive genotypes for each of two genes (aabb) result in an albino corn snake.
The allele b17 produces a dominant phenotype, although b1 through b16 do not.
In rabbits and many other mammals, one genotype (ee) prevents any fur color from developing
In Drosophila (fruit flies), white eyes can be due to an X-linked gene or to a combination of other genes.
- 16. Multiple Choice
Given the parents AABBCc × AabbCc, assume simple dominance for each trait and independent assortment. What proportion of the progeny will be expected to phenotypically resemble the first parent?
1/4
1/8
3/4
3/8
- 17. Multiple ChoiceBlood type ABepistasiscodominanceincomplete dominancehybrid vigor
- 18. Multiple Choice
Albinism is an autosomal recessive condition. Which circle graph shows the genotype probability when an albino female mates with a male that is heterozygous for the albinism trait?
- 19. Multiple Choice
Hawaiian happy face spiders from the island of Maui can have different markings, as shown in the image.
The pattern allele is dominant to the plain allele.
A plain spider is crossed with a homozygous patterned spider.
What percentage of the offspring from this cross are expected to be patterned?
0%
25%
50%
100%
- 20. Multiple ChoiceWhat goes in box 1AABbAABBaabbAaBb
- 21. Multiple Choice
Which of Mendel's laws states that alleles are separated during meiosis?
Law of Dominance
Law of Segregation
Law of Independent Assortment
- 22. Multiple ChoiceJim has type AB+ blood. His dad could be type O+.TrueFalse
- 23. Multiple ChoiceWhat gamete possibilities could come from this parent's genotype?AB, AB, aB, aBAb, AB, Ab, abAb, Ab, Ab, AbAB, aB, ab, aB
- 24. Multiple Choice
Charts that trace patterns of inheritance
of a trait
Alleles
Gene Pool
Pedigrees
Genome
- 25. Multiple ChoiceA calico cat shows both the traits for orange fur and black fur. What kind of allele expression is this?Incomplete DominanceCo dominanceIndependent assortmentRecessive inheritance
- 26. Multiple Choice
Hemophilia is a recessive x-linked disorder.
Which genotype represents a female who is a carrier for hemophilia?
XHXh
XhXh
XHXH
XhY
- 27. Multiple ChoiceDuchenne muscular dystrophy is a recessive x-linked disorder.
According to the Punnett square, what percentage of male offspring will have the disorder?0%25%50%100% - 28. Multiple ChoiceWhat type of inheritance is determined by multiple genes located at different loci on different chromosomes and there can be a range of traits?CodominanceIncomplete dominancePolygenic traits
- 29. Multiple Choice
B = Black, b = Chocolate. Some labs inherit black or brown fur alleles but have light fur. This graphic shows an example of...
Codominance
Epistasis
Mendelian Dominance
Polygenic inheritance
- 30. Multiple ChoiceIn guinea pigs, black hair is dominant to white hair and short hair is dominant to long hair. What are the original genotypes of the PARENTS in this particular dihybrid cross?Bbss x bbSsbbSs x BBssBbSs x BbSsBBSS x bbss
- 31. Multiple ChoiceA heterozygous white pig(Ww) mate with blue pig (ww).
Probability of getting heterozygous offspring?50%25%100% - 32. Multiple Choice
An individual with the genotype AABbCcDD can make how many different gametes?
2
4
8
16
- 33. Multiple Choice
Which of following can't produce a child with type O blood?
A x A
A x B
O x AB
O x O
- 34. Multiple Choice
Tail length makes normal distribution. This type of variation probably reflects
polygenic inheritance
pleiotropy
epistasis
incomplete dominance
- 35. Multiple Choice
PpYy x ppYy. What fraction of offspring are homozygous recessive?
1/4
1/8
1/2
1/16
- 36. Multiple Choice
Probability of A is 1/2 and allele B is 1/2, then probability of both A and B is?
1/2
1/8
1/4
1
- 37. Multiple ChoiceWhich of the following genotypes is a purebred?BbGgbbDd
- 38. Multiple ChoiceWhich of the following is a phenotype?BbBlack fur
- 39. Multiple Choice
Linkage on a single chromosome violates Mendel’s law of
independent assortment.
segregation.
dominance.
genetic determinism.
- 40. Multiple Choice
Epistasis requires
more than two alleles at a single gene.
two or more genes.
pleiotropy
dominance.
- 41. Multiple ChoiceCystic fibrosis affects the lungs, the pancreas, the digestive system, and other organs, resulting in symptoms ranging from breathing difficulties to recurrent infections. Which of the following terms best describes this?incomplete dominanceepistasismultiple allelespleiotropy
- 42. Multiple Choice
Probability of A is 1/2 and allele B is 1/2, then probability of A or B is?
1/2
1/8
1/4
1
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