NAS2 CHALLENGE EXAM
(QUESTIONS AND 100% CORRECT
ANSWERS)
The physical divisions of a person's genome are
called:
Chromosomes
What does it mean to be diploid?
To have 2 sets of each chromosome
Color blindness is a sex-linked recessive trait. Given
this information, in which chromosomes are the genes
controlling color vision likely located?
X Chromosome
What is the typical room temperature of water?
20-22 degrees Celsius
An individual's phenotype is their:
Observable characteristics or trait
Which of the following is the stage during which
chromatin fibers condense to form visible
chromosomes?
Prophase
Which of these activities happens in prophase?
1) DNA Replication
2) Microtubules assemble into spindle
3) Nuclear envelope breaks apart
4) Cell division
,5) Chromosomes align in the middle of the cell
6) Chromosomes decondense
2 and 3
What would be considered to be a normal, healthy
body temperature?
37 degrees Celsius
A duplicated/replicated chromosome is composed of:
2 sister chromatids connected at the centromere
Which does NOT happen in prophases in mitosis?
Crossing over
Meiosis is divided into 2 major stages. These are
called:
Meiosis I and Meiosis II
The base unit for measuring mass is:
Gram
If a blood type O person is having a baby with a type
AB person, what blood type can they NOT produce?
Both O and AB
Which is the proper order of phases in mitosis?
Prophase -> metaphase -> anaphase -> telophase
Why do X-linked recessive traits appear more in males
than females?
Males only need to inherit one copy of the recessive allele
to show the trait, and females need to inherit 2 copies.
Cell division in somatic cells for growth, development,
and repair is called:
Mitosis
You are measuring an adult person's weight. In the
metric system, what unit is most likely used?
Kilograms
, Which of the following is the stage in which
centromeres split and sister chromatids move to
opposite poles?
Anaphase
Do chromosomes from each parent always line up on
the same side (i.e. are mom's chromosomes always
on the right)?
No, it occurs randomly
Genotypes can be:
Both
John's blood is type O. His wife is type AB and is the
biological mother of two children, Peter and Jane. If
Peter has type A blood, and Jane has type B blood,
what can we conclude?
John could be the biological father of both children.
Which is NOT a difference between mitosis and
meiosis?
Mitosis starts with diploid cells and meiosis starts with
haploid cells
"XX" versus "XY" describes a person's what?
Genetic sex
The physical divisions of a person's genome are
called what?
Chromosomes
What are you testing when you do an experiment?
The hypothesis
What type of cells divide to create gametes?
Diploid cells
What is crossing over?
Exchange of DNA between homologous chromosomes
What are the two stages of the CELL CYCLE:
(QUESTIONS AND 100% CORRECT
ANSWERS)
The physical divisions of a person's genome are
called:
Chromosomes
What does it mean to be diploid?
To have 2 sets of each chromosome
Color blindness is a sex-linked recessive trait. Given
this information, in which chromosomes are the genes
controlling color vision likely located?
X Chromosome
What is the typical room temperature of water?
20-22 degrees Celsius
An individual's phenotype is their:
Observable characteristics or trait
Which of the following is the stage during which
chromatin fibers condense to form visible
chromosomes?
Prophase
Which of these activities happens in prophase?
1) DNA Replication
2) Microtubules assemble into spindle
3) Nuclear envelope breaks apart
4) Cell division
,5) Chromosomes align in the middle of the cell
6) Chromosomes decondense
2 and 3
What would be considered to be a normal, healthy
body temperature?
37 degrees Celsius
A duplicated/replicated chromosome is composed of:
2 sister chromatids connected at the centromere
Which does NOT happen in prophases in mitosis?
Crossing over
Meiosis is divided into 2 major stages. These are
called:
Meiosis I and Meiosis II
The base unit for measuring mass is:
Gram
If a blood type O person is having a baby with a type
AB person, what blood type can they NOT produce?
Both O and AB
Which is the proper order of phases in mitosis?
Prophase -> metaphase -> anaphase -> telophase
Why do X-linked recessive traits appear more in males
than females?
Males only need to inherit one copy of the recessive allele
to show the trait, and females need to inherit 2 copies.
Cell division in somatic cells for growth, development,
and repair is called:
Mitosis
You are measuring an adult person's weight. In the
metric system, what unit is most likely used?
Kilograms
, Which of the following is the stage in which
centromeres split and sister chromatids move to
opposite poles?
Anaphase
Do chromosomes from each parent always line up on
the same side (i.e. are mom's chromosomes always
on the right)?
No, it occurs randomly
Genotypes can be:
Both
John's blood is type O. His wife is type AB and is the
biological mother of two children, Peter and Jane. If
Peter has type A blood, and Jane has type B blood,
what can we conclude?
John could be the biological father of both children.
Which is NOT a difference between mitosis and
meiosis?
Mitosis starts with diploid cells and meiosis starts with
haploid cells
"XX" versus "XY" describes a person's what?
Genetic sex
The physical divisions of a person's genome are
called what?
Chromosomes
What are you testing when you do an experiment?
The hypothesis
What type of cells divide to create gametes?
Diploid cells
What is crossing over?
Exchange of DNA between homologous chromosomes
What are the two stages of the CELL CYCLE:
