BSC1005 Final Exam UPDATED ACTUAL
Exam Questions and CORRECT Answers
Which of the following occurs during interphase? - CORRECT ANSWER - Chromosome
duplication.
During metaphase I, ______. - CORRECT ANSWER - homologous chromosomes line up
in the middle of the cell
Genetic variation is accomplished by all but one of the following. Which is it? - CORRECT
ANSWER - the events of meiosis II
One difference between mitosis and meiosis is ______. - CORRECT ANSWER - mitosis
produces cells genetically identical to the parent cell, but meiosis does not
Upon completion of telophase I and cytokinesis in meiosis, there is(are) ______ cell(s). -
CORRECT ANSWER - two haploid
Chromosomes that do not determine the sex of an individual are called ______. - CORRECT
ANSWER - autosomes
Which of the following is the best description of the events of anaphase I in meiosis? -
CORRECT ANSWER - Homologous chromosomes randomly separate and migrate to
opposite poles.
A duplicated chromosome consists of two ______. - CORRECT ANSWER - sister
chromatids
A(n) ______ is an example of an organism that can sometimes reproduce asexually. - CORRECT
ANSWER - Komodo dragon
, In humans, the inheritance of ______ is best explained as being polygenic. - CORRECT
ANSWER - height
To determine the phenotype of an individual who expresses a dominant trait, you would cross
that individual with an individual who ______. - CORRECT ANSWER - is homozygous
recessive for that trait
What is the key to the recognition of codominance? - CORRECT ANSWER - The
heterozygote expresses the phenotype of both homozygotes.
An individual with the blood group genotype LMLN has the phenotype MN. What is the
relationship between the LM and LN alleles? - CORRECT ANSWER - codominance
An individual who is homozygous ______. - CORRECT ANSWER - carries two copies of
the same allele for a gene
In cattle, roan coat color (mixed red and white hairs) occurs in the heterozygous (Rr) offspring of
red (RR) and white (rr) homozygotes. Which of the following crosses would produce offspring in
the ratio of 1 red:2 roan:1 white? - CORRECT ANSWER - roan × roan
What is the key to the recognition of incomplete dominance? - CORRECT ANSWER -
The phenotype of the heterozygote falls between the phenotypes of the homozygotes.
A couple has two female children. What is the probability that their next child will be male? -
CORRECT ANSWER - 50%
An individual with (naturally) curly hair and an individual with (naturally) straight hair mate; all
of their offspring have (naturally) wavy hair. If an individual with wavy hair mates with an
individual with straight hair, what is the probability that their child will have curly hair? -
CORRECT ANSWER - 0%
Exam Questions and CORRECT Answers
Which of the following occurs during interphase? - CORRECT ANSWER - Chromosome
duplication.
During metaphase I, ______. - CORRECT ANSWER - homologous chromosomes line up
in the middle of the cell
Genetic variation is accomplished by all but one of the following. Which is it? - CORRECT
ANSWER - the events of meiosis II
One difference between mitosis and meiosis is ______. - CORRECT ANSWER - mitosis
produces cells genetically identical to the parent cell, but meiosis does not
Upon completion of telophase I and cytokinesis in meiosis, there is(are) ______ cell(s). -
CORRECT ANSWER - two haploid
Chromosomes that do not determine the sex of an individual are called ______. - CORRECT
ANSWER - autosomes
Which of the following is the best description of the events of anaphase I in meiosis? -
CORRECT ANSWER - Homologous chromosomes randomly separate and migrate to
opposite poles.
A duplicated chromosome consists of two ______. - CORRECT ANSWER - sister
chromatids
A(n) ______ is an example of an organism that can sometimes reproduce asexually. - CORRECT
ANSWER - Komodo dragon
, In humans, the inheritance of ______ is best explained as being polygenic. - CORRECT
ANSWER - height
To determine the phenotype of an individual who expresses a dominant trait, you would cross
that individual with an individual who ______. - CORRECT ANSWER - is homozygous
recessive for that trait
What is the key to the recognition of codominance? - CORRECT ANSWER - The
heterozygote expresses the phenotype of both homozygotes.
An individual with the blood group genotype LMLN has the phenotype MN. What is the
relationship between the LM and LN alleles? - CORRECT ANSWER - codominance
An individual who is homozygous ______. - CORRECT ANSWER - carries two copies of
the same allele for a gene
In cattle, roan coat color (mixed red and white hairs) occurs in the heterozygous (Rr) offspring of
red (RR) and white (rr) homozygotes. Which of the following crosses would produce offspring in
the ratio of 1 red:2 roan:1 white? - CORRECT ANSWER - roan × roan
What is the key to the recognition of incomplete dominance? - CORRECT ANSWER -
The phenotype of the heterozygote falls between the phenotypes of the homozygotes.
A couple has two female children. What is the probability that their next child will be male? -
CORRECT ANSWER - 50%
An individual with (naturally) curly hair and an individual with (naturally) straight hair mate; all
of their offspring have (naturally) wavy hair. If an individual with wavy hair mates with an
individual with straight hair, what is the probability that their child will have curly hair? -
CORRECT ANSWER - 0%
