Transcript Gregor Mendel used pea plants to study A.flowering. B.gamete

1. Gregor Mendel used pea plants to
study
A.flowering.
B.gamete formation.
C.the inheritance of traits.
D.cross-pollination.
2.The principles of probability can be used
to
A .predict the traits of the offspring
produced by genetic crosses.
B. determine the actual outcomes of
genetic crosses.
C. predict the traits of the parents used in
genetic crosses.
D. decide which organisms are best to use
in genetic crosses.
3. Organisms that have two identical
alleles for a particular trait are said to
be(B.4.1A)
A. hybrid.
B. homozygous.
C. heterozygous.
D. dominant.
4. What principle states that during
gamete formation genes for different
traits separate without influencing
each other’s inheritance? (B4.1d)
A. principle of dominance
B. principle of independent
assortment
C. principle of probabilities
D. principle of segregation
5. How many different allele
combinations would be found in the
gametes produced by a pea plant
whose genotype was RrYY?
A. 2
B. 4
C. 8
D. 16
6. Situations in which one allele for a
gene is not completely dominant over
another allele for that gene are called
(B.41c)
A. multiple alleles.
B. incomplete dominance.
C. polygenic inheritance.
D. multiple genes.
7. How many chromosomes are shown
in a normal human karyotype?(B.4.3e)
A. 2
B. 23
C. 44
D. 46
8. In humans, a male has
A. one X chromosome only.
B. two X chromosomes.
C. one X chromosome and one Y
chromosome.
D. two Y chromosomes.
9. Which of the following is
determined by multiple alleles?(B4.1c)
A. Red Green color blindness
B. ABO blood group
C. Hemophilia
D. Down Syndrome
10. Which of the following genotypes
result in the same phenotype?(B4.1c)
A. AA and AB
B. BB and BO
C. BB and AB
D. BO and OO
11. A phenotype that results from a
dominant allele must have at least
_____ dominant allele(s) present in
the parent(s).(B4.1c)
A. one
B. two
C. three
D. four
12.The failure of chromosomes to
separate during meiosis is called
A. nondisjunction.
B. X-chromosome inactivation.
C. Turner’s syndrome.
D. Down syndrome.
13. Which of the following
combinations of sex chromosomes
represents a female?
A. XY
B. XXY
C. XXXY
D. XXX
14. A heterozygous organism is best
described as which of these?(B4.1e)
A. dominant
B. genotype
C. hybrid
D. true-breeding
15. Colorblindness is more common in
males than in females because(B4.1c)
A. fathers pass the allele for colorblindness
to their sons only.
B. the allele for colorblindness is located on
the Y chromosome.
C. the allele for colorblindness is recessive
and located on the X chromosome.
D. males who are colorblind have two
copies of the allele for colorblindness.
16.If a man with the genotype AO and
a woman with the genotype BO
produce an offspring, what might be
the offspring’s blood type?(B4.1c)
A. AB or O
B. A, B, or O
C. A, B, AB, or O
D. AB only
What is this?
A. Phenotype
C. Karyotype
B. Genotype
D. tetrad
18. How many chromosomes are in this karyotype?
A. 23
B. 22
C. 46
D. 47
19 . Picture of the paired
chromosomes is
A. A karyotype
B. A genotype
C. A phenotype
D . None of the above
20. What caused the extra chromosome in
this karyotype?
A. Mutation
C. Meiosis
B Nondisjunction
D. Mitosis
21. What is the genotype of the unknown
bunny?
A. LL
C. ll
B. Ll
D. LLll
22. What type of inheritance is shown above?
A. Multiple alleles C. codominance
B. X linked trait
D. none of the above
23 A pea plant homozygous for the trait of smooth seeds is crossed
with a pea plant that is homozygous for the trait of wrinkled seeds.
The first generation produces seeds that are all smooth.
What percent of the second-generation plants will have smooth seeds
when the F1 generation is self-fertilized? (B4.1c)
A. 100
C. 25
B. 50
D. 75