BIO 1100 Exam 3 Complete Study
Questions with Verified Answers
Already Graded A+
1. When two haploid gametes fuse, the result is a diploid ________ -
ANSWER zygote
2. Cancer cells exhibit two properties that distinguish them from normal cells.
These properties are... - ANSWER Lack anchorage dependence
Lack density inhibition
Lack cell cycle checkpoints
3. The term used to describe a tumor spreads to new locations within the body -
ANSWER metastatic
4. Which of the following is (are) true for alleles?
a.They can be identical or different for any given gene in a somatic cell
b.They can be dominant or recessive
c.They can represent alternative forms of a gene.
d.Only A and B are correct
e. A, B and C are correct - ANSWER e. A, B and C are correct
5. A 3:1 phenotypic trait is characteristic of which of the following?
a. a monohybrid cross
b. a dihybrid cross
c. a trihybrid cross
, d. linked genes - ANSWER a. Monohybrid cross
6. When crossing a homozygous recessive with a heterozygote, what is the
chance of getting an offspring with the homozygous genotype?
a. 0%
b. 25%
c. 50%
d. 75%
e. 100% - ANSWER c. 50%
7. The frequency of crossing over between any two linked genes is
a.determined by their relative dominance
b.the same as if they were not linked
c.higher if they are recessive
d.different between males and females
e.proportional to the distance between them - ANSWER e. Proportional to the
distance between them
8. True/False
A linkage map can be used to identify the relative location of a gene -
ANSWER True
9. True/False
The gene required for male determination is the XIST gene - ANSWER False
10.True/False
The chiasmata are involved in separating sister chromatids to opposite sides of
a cell during mitosis - ANSWER False
,11.List 3 reasons Mendel's experiments with peas were successful. - ANSWER
Accurate records
Huge sample size
Unlinked characters
Botanical training
Math training
12.List the stages of mitosis in order, beginning with interphase. - ANSWER
Prophase
metaphase
anaphase
telophase
cytokinesis
13.True/False
Many anticancer drugs are derived from rain forest plants - ANSWER True
14.Meiosis II is very similar to mitosis except that in meiosis II
a.chromosomes are not duplicated first
b.somatic cells are produced
c.homologous chromosomes exchange DNA via chiasmata
d.the final cells are diploid - ANSWER a. Chromosomes are not duplicated
first
15.What are two plant hormones that promote cell division?
, a.Auxin and ATP
b.Auxin and cytokinin
c.Abscissic acid and ethylene
d.Xanthophyll and chlorophyll b - ANSWER b. Auxin and cytokinin
16.During which phases of mitosis are chromosomes composed of two
chromatids?
a. From G2 of interphase through metaphase
b. From interphase through anaphase
c. From G1 of interphase through metaphase
d. From anaphase through telophase - ANSWER a. From G2 of interphase
through metaphase
17.Starting with a zygote, a series of two cell divisions would produce an early
embryo with how many cells? - ANSWER Four
18.True/False
Germ cells are those that make up the vast majority of the body [somatic] -
ANSWER False
19.True/False
A bacterium does not reproduce cells by mitosis and cytokinesis - ANSWER
True
20.This means there is a 50-50 chance that a given daughter cell of Meiosis I
will receive a given maternal chromosome - ANSWER Independent
assortment
Questions with Verified Answers
Already Graded A+
1. When two haploid gametes fuse, the result is a diploid ________ -
ANSWER zygote
2. Cancer cells exhibit two properties that distinguish them from normal cells.
These properties are... - ANSWER Lack anchorage dependence
Lack density inhibition
Lack cell cycle checkpoints
3. The term used to describe a tumor spreads to new locations within the body -
ANSWER metastatic
4. Which of the following is (are) true for alleles?
a.They can be identical or different for any given gene in a somatic cell
b.They can be dominant or recessive
c.They can represent alternative forms of a gene.
d.Only A and B are correct
e. A, B and C are correct - ANSWER e. A, B and C are correct
5. A 3:1 phenotypic trait is characteristic of which of the following?
a. a monohybrid cross
b. a dihybrid cross
c. a trihybrid cross
, d. linked genes - ANSWER a. Monohybrid cross
6. When crossing a homozygous recessive with a heterozygote, what is the
chance of getting an offspring with the homozygous genotype?
a. 0%
b. 25%
c. 50%
d. 75%
e. 100% - ANSWER c. 50%
7. The frequency of crossing over between any two linked genes is
a.determined by their relative dominance
b.the same as if they were not linked
c.higher if they are recessive
d.different between males and females
e.proportional to the distance between them - ANSWER e. Proportional to the
distance between them
8. True/False
A linkage map can be used to identify the relative location of a gene -
ANSWER True
9. True/False
The gene required for male determination is the XIST gene - ANSWER False
10.True/False
The chiasmata are involved in separating sister chromatids to opposite sides of
a cell during mitosis - ANSWER False
,11.List 3 reasons Mendel's experiments with peas were successful. - ANSWER
Accurate records
Huge sample size
Unlinked characters
Botanical training
Math training
12.List the stages of mitosis in order, beginning with interphase. - ANSWER
Prophase
metaphase
anaphase
telophase
cytokinesis
13.True/False
Many anticancer drugs are derived from rain forest plants - ANSWER True
14.Meiosis II is very similar to mitosis except that in meiosis II
a.chromosomes are not duplicated first
b.somatic cells are produced
c.homologous chromosomes exchange DNA via chiasmata
d.the final cells are diploid - ANSWER a. Chromosomes are not duplicated
first
15.What are two plant hormones that promote cell division?
, a.Auxin and ATP
b.Auxin and cytokinin
c.Abscissic acid and ethylene
d.Xanthophyll and chlorophyll b - ANSWER b. Auxin and cytokinin
16.During which phases of mitosis are chromosomes composed of two
chromatids?
a. From G2 of interphase through metaphase
b. From interphase through anaphase
c. From G1 of interphase through metaphase
d. From anaphase through telophase - ANSWER a. From G2 of interphase
through metaphase
17.Starting with a zygote, a series of two cell divisions would produce an early
embryo with how many cells? - ANSWER Four
18.True/False
Germ cells are those that make up the vast majority of the body [somatic] -
ANSWER False
19.True/False
A bacterium does not reproduce cells by mitosis and cytokinesis - ANSWER
True
20.This means there is a 50-50 chance that a given daughter cell of Meiosis I
will receive a given maternal chromosome - ANSWER Independent
assortment
