Genetics Exam test queries and answers
graded A+
1. if an individual has identical alleles for a given homozygous
gene, they are said to be:
2. Generally, chromosomes of eukaryotes are circular. False
3. What is the site of position of a particular progeny
gene on a chromosome with a
recessive
4. Which of the following was NOT one of phenotype.
Mendel's con- clusions based on his If the
monohybrid crosses? parents are
- Genes are carried on chromosomes. true
- Genes behave as particles during inheritance. breeding for
- Members of a gene pair segregate equally the
into ga- metes. dominant
- Genes exist in pairs. and
- One member of a gene pair can mask the recessive
expression of the other member. phenotypes
?
5. Mating a heterozygous individual with a
recessive ho- mozygote is called a
(AaBb x aabb)
6. In a cross between AaBbCcDDee and
AaBbccDdEe genotypes, what proportion of the
offspring would be expected to be A_bbccDDE_?
(A_ means AA or Aa.)
7. During gamete formation the segregation of
the alle- les of one allelic pair is independent of
the segregation of the alleles of another allelic
pair.
8. What is the probability of obtaining a
1/
19
, Genetics Exam test queries and answers
graded A+
locus
Genes are carried on chro- mosomes.
testcross
3/128
Mendel's Second Law
0
2/
19
, Genetics Exam test queries and answers
graded A+
9. Which of the following process is unique to plants? double
fertilization
10. The location of chromosome intertwining chiasma
(cross- ing-over) during meiosis is known
as
11. if the "A" allele is dominant to the "a" allele. What
is the 3/4 probability of obtaining offspring with
the dominant phenotype from a mating between
two heterozygous parents?
12. term used to describe a individual, stain, true breeding
breed, or variety of an organism having a
certain trait which is passed on to all
subsequent generations
13. Traits that have a few possible phenotypes that fall into qualitative
traits
discrete classes
14. The ABO blood types in humans provide codominance and
examples of what two genetic phenomenon multiple alleles
15. In a cross between pure-breeding tall plants The tall and short traits
with as-
pure-breeding short plants, all of the F 1 are tall. When sort
independently of each
these plants are allowed to fertilize 2. Fertilizatio
themselves, the F 2 plants occur in a ratio of 3 n occurs
tall:1 short. Which of the following is not a randomly
valid conclusion from these results? between
1. The tall and short traits assort independently of gametes car-
each other in this cross. rying the
3/
19
graded A+
1. if an individual has identical alleles for a given homozygous
gene, they are said to be:
2. Generally, chromosomes of eukaryotes are circular. False
3. What is the site of position of a particular progeny
gene on a chromosome with a
recessive
4. Which of the following was NOT one of phenotype.
Mendel's con- clusions based on his If the
monohybrid crosses? parents are
- Genes are carried on chromosomes. true
- Genes behave as particles during inheritance. breeding for
- Members of a gene pair segregate equally the
into ga- metes. dominant
- Genes exist in pairs. and
- One member of a gene pair can mask the recessive
expression of the other member. phenotypes
?
5. Mating a heterozygous individual with a
recessive ho- mozygote is called a
(AaBb x aabb)
6. In a cross between AaBbCcDDee and
AaBbccDdEe genotypes, what proportion of the
offspring would be expected to be A_bbccDDE_?
(A_ means AA or Aa.)
7. During gamete formation the segregation of
the alle- les of one allelic pair is independent of
the segregation of the alleles of another allelic
pair.
8. What is the probability of obtaining a
1/
19
, Genetics Exam test queries and answers
graded A+
locus
Genes are carried on chro- mosomes.
testcross
3/128
Mendel's Second Law
0
2/
19
, Genetics Exam test queries and answers
graded A+
9. Which of the following process is unique to plants? double
fertilization
10. The location of chromosome intertwining chiasma
(cross- ing-over) during meiosis is known
as
11. if the "A" allele is dominant to the "a" allele. What
is the 3/4 probability of obtaining offspring with
the dominant phenotype from a mating between
two heterozygous parents?
12. term used to describe a individual, stain, true breeding
breed, or variety of an organism having a
certain trait which is passed on to all
subsequent generations
13. Traits that have a few possible phenotypes that fall into qualitative
traits
discrete classes
14. The ABO blood types in humans provide codominance and
examples of what two genetic phenomenon multiple alleles
15. In a cross between pure-breeding tall plants The tall and short traits
with as-
pure-breeding short plants, all of the F 1 are tall. When sort
independently of each
these plants are allowed to fertilize 2. Fertilizatio
themselves, the F 2 plants occur in a ratio of 3 n occurs
tall:1 short. Which of the following is not a randomly
valid conclusion from these results? between
1. The tall and short traits assort independently of gametes car-
each other in this cross. rying the
3/
19
