Cp Bio 2 - Unit 3 Rebate (Spring 2014)
12 Questions
| Attempts: 101
Questions and Answers
- 1.If a pea plant were homozygous recessive for height, how would its alleles be represented?
- A.
Tt
- B.
TT
- C.
Tt
- D.
TT
- 2.A plant that is homozygous for red flowers (rr) is crossed with a plants that is homozygous for white flowers (ww). In the case of incomplete dominance, the flowers of the offspring will be ___.
- A.
Red and white
- B.
White only
- C.
Red only
- D.
Pink only
- 3.The term for a cross that involves just one trait, such as flower color, is ___.
- A.
A homozygous cross
- B.
A test cross
- C.
A monohybrid cross
- D.
A dihybrid cross
- 4.Hair color and eye color are examples of a person's
- A.
Recessive traits.
- B.
Dominant alleles.
- C.
Genotype.
- D.
Phenotype.
- 5.What do the letters inside the grid of a Punnett square represent?
- A.
Phenotypes of parents
- B.
Genotypes of offspring
- C.
Test-crosses of offspring
- D.
Chromosomes of parents
- 6.Which law states that organisms inherit two copies of each gene and donate one copy to each of their offspring?
- A.
Law of genetic linkage
- B.
Law of segregation
- C.
Law of independent assortment
- D.
Law of inheritance
- 7.Recessive alleles may not be expressed because they are
- A.
Masked by the dominant allele.
- B.
The least common allele in a population.
- C.
The most common allele in a population.
- D.
Harmful to the organism.
- 8.Two parents have the genotype Gg for a genetic disorder caused by a dominant allele. What is the chance that any of their children will inherit the disorder?
- A.
25%
- B.
50%
- C.
75%
- D.
100%
- 9.For an XX female to express a recessive sex-linked trait, she must have
- A.
A Y chromosome.
- B.
An inactivated allele.
- C.
Two recessive alleles.
- D.
Two dominant alleles.
- 10.Any of the alternative forms of a gene that occurs at a specific place on a chromosome are known as ___.
- A.
Alleles
- B.
Genes
- C.
Chromosomes
- D.
Recessive traits
- 11.A chart or "family tree" that tracks which members of a family have a particular trait is called a ___.
- A.
Pedigree
- B.
Punnett square
- C.
Genetic linkage
- D.
DNA sequence
- 12.___ studied traits of pea plants and discovered the two fundamental laws of genetics.
- A.
Mendel
- B.
Watson and Crick
- C.
Mack
- D.
Einstein
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