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WorksheetsQ3 Benchmark Exam
Total questions: 70
Worksheet time: 35mins
DNA is made up of repeating subunits called _____.
nucleotides
lipids
proteins
covalent bonds
What makes up a DNA or RNA nucleotide?
Phosphate group
5-carbon sugar
Nitrogen base
All of these are correct.
Define gene.
It's a segment of DNA that codes for a protein.
It's a segment of protein that codes for DNA.
It's a type of clothing.
It's a mutation in DNA.
What is the end product of DNA replication?
Two new DNA molecules form.
A polypeptide is made.
You get two enzymes, DNA polymerase & DNA helicase.
None of these are correct.
If one strand of DNA is ATT GCG TCA, what is the complement?
ATT GCG TCA
TAA CGC AGT
UAA CGC AGU
None of these are correct.
What is the correct order for the stages of mitosis?
prophase, metaphase, anaphase, & telophase
prophase II, metaphase II, anaphase II, & telophase II
metaphase, anaphase, prohase & telophase
None of these are correct.
G1 occurs immediately _____.
after cytokinesis
after mitosis
after the S phase
before G2
Mitosis occurs immediately _____.
before cytokinesis
after G1
before cytokinesis & after G2 are correct.
None of these are correct.
Meiosis _____.
halves the number of chromosomes
makes haploid cells from diploid cells
creates gametes
All of these are correct.
Crossing over _____.
increases genetic variation in gametes
happens during prophase I
is a good thing
All of these are correct.
During which phase of meiosis do individual chromosomes (X) and not homologous pairs (XX) line up on the equator of the cell?
metaphase II
metaphase I
prophase I
prophase II
During which phase of meiosis do pairs of homologous chromosomes line up on the equator of the cell?
metaphase II
metaphase I
prophase I
prophase II
During which phase of meiosis do the centromeres split?
anaphase II
anaphase I
telophase II
prophase II
The number of chromosomes in a human gamete can be described as _____.
n
23
haploid
All of these are correct.
The number of chromosomes in a human somatic cell can be described as _____.
2n
46
diploid
All of these are correct.
Mitosis forms _____.
two genetically identical diploid cells
four genetically identical haploid cells
four genetically different haploid cells
two genetically different diploid cells
Meiosis forms _____.
two genetically identical diploid cells
four genetically identical haploid cells
four genetically different haploid cells
two genetically different diploid cells
Identify the phase.
metaphase of mitosis
metaphase I of meiosis
anaphase I of meiosis
anaphase of mitosis
In rabbits, grey hair is dominant to white hair. Also in rabbits, black eyes are dominant to red eyes. These letters represent the genotypes of the rabbits:
GG = gray hair
Gg = gray hair
gg = white hair
BB = black eyes
Bb = black eyes
bb = red eyes
What is the probability of producing offspring with gray hair and black eyes?
8/16
1/16
9/16
3/16
In rabbits, grey hair is dominant to white hair. Also in rabbits, black eyes are dominant to red eyes. These letters represent the genotypes of the rabbits:
GG = gray hair
Gg = gray hair
gg = white hair
BB = black eyes
Bb = black eyes
bb = red eyes
What is the probability of producing offspring with white hair and black eyes?
8/16
1/16
9/16
3/16
_____, also known as quantitative inheritance, refers to a single inherited phenotypic trait that is controlled by two or more different genes.
Polygenic inheritance
Codominance
Incomplete dominance
Complete dominance
_____ is a form of dominance wherein the alleles of a gene pair in a heterozygote are fully expressed. This results in offspring with a phenotype that is neither dominant nor recessive.
Polygenic inheritance
Codominance
Incomplete dominance
Complete dominance
_____ refers to a genetic situation in which one allele does not completely dominate another allele, and therefore results in a new phenotype. BB (blue) + RR (red) = BR (purple)
Polygenic inheritance
Codominance
Incomplete dominance
Complete dominance
_____ is a form of dominance in heterozygous condition wherein the allele that is regarded as dominant completely masks the effect of the allele that is recessive.
Polygenic inheritance
Codominance
Incomplete dominance
Complete dominance
_____ cells don't divide/go through mitosis.
skeletal muscle
nerve
Both skeletal muscle & nerve
None of these answer are correct.
The genetic composition of an organism is better known as the _____.
phenotype
genotype
The physical traits of an organism that are actually expressed are better known as the _____.
phenotype
genotype
A mutation where a piece of chromosome breaks off and reattaches upside down is called a(n) _____.
inversion
duplication
deletion
translocation.
A mutation where a piece of chromosome breaks off and reattaches to a non-homologous chromosome is called a(n) _____.
inversion
duplication
deletion
translocation.
The sequence of amino acids primarily determines the shape of a _____.
protein
lipid
carbohydrate
nucleic acid
If brown eyes are dominant to blue eyes, how can two brown-eyed parents have children with blue eyes?
They are both heterozygous for brown eyes.
They are both homozygous for blue eyes.
They can't have kids with blue eyes.
They are both homozygous for brown eyes.
A mutation where a piece of chromosome breaks off and is lost is called a(n) _____.
inversion
duplication
deletion
translocation.
What causes genetic variability?
crossing over
independent assortment
random fertilization
All of these are correct.
Chromosomes that are similar in size, shape, & banding pattern are know as _____.
sister chromatids
chromatin
homologous chromosomes
centromeres
in humans, sperm + egg = _____.
diploid zygote (2n = 46)
diploid zygote (n = 23)
haploid zygote (2n = 46)
an egg with 46 chromosomes
TT = _____.
homozygous
dominant
Both homozygous & dominant are correct.
Neither homozygous nor dominant are correct.
tt = _____.
homozygous
dominant
Both homozygous & dominant are correct.
Neither homozygous nor dominant are correct.
Tt = _____.
homozygous
heterogeneous
dominant phenotype displayed
recessive phenotype displayed
A substrate can be broken down by a(n) _____.
enzyme
active site
inactive site
ATP molecule
Proteins are made by _____.
ribosomes
mitochondria
lipids
carbohydrates
A(n) _____ is one of a pair of genes that appear at a particular location on a particular chromosome and control the same characteristic, such as blood type or color blindness.
allele
chromosome
hybrid
coupled trait
Having two of the same alleles for a trait can be described as _____.
homozygous
heterozygous
homogeneous
heterogeneous
_____ is controlled by multiple alleles.
blood type
hemophilia
sickle cell anemia
pattern baldness
TT (homozygous tall plants) are crossed with tt (homozygous short plants). All of the offspring are heterozygous tall plants because _____.
T is dominat to t
t is dominant to T
You can't cross tall plants with short plants.
The short plants would die off.
_____ is when the alleles of a gene separate from each other during meiosis.
law of segregation
law of thermodynamics
crossing over
nondisjunction
Describe the possible outcomes.
1/2 normal females : 1/2 hemophiliac males
1/2 hemophiliac females : 1/2 normal males
No one with hemophilia
1/2 normal females : 1/4 hemophiliac males : 1/4 normal males
Why do men have a better chance at inheriting colorblindness?
Because females would need to inherit 2 recessive alleles to be colorblind.
Because males only need to inherit 1 recessive allele to be colorblind.
Because colorblindness is a sex linked trait.
All of these are correct.
If the parental generation of pea plants is heterozygous tall and homozygous recessive short, what would the F1 generation look like?
all short
all tall
2 tall : 2 short
None of these are correct.
Punnett squares are used for _____.
determining all the possible results of a genetic cross
determining the genotypes of the offspring
determining the alleles in the gametes of the parents
All of these are correct.
In cattle coloration (R) is the symbol for red hair, (W) is the symbol for white hair, and (RW) is the symbol for roan (a red coat with white hairs interspersed/mixed in).
codominance
incomplete dominance
simple dominance
sex-linked trait
Identify the phase.
anaphase of mitosis
anaphase I of meiosis
anaphase II of meiosis
cytokinesis
Identify the phase.
anaphase of mitosis
anaphase I of meiosis
anaphase II of meiosis
cytokinesis
_____ creates genetic variation in daughter cells.
Mitosis
Meiosis
In _____, the cells undergoes cytokinesis once.
mitosis
meiosis
In _____, the cells undergoes cytokinesis twice.
mitosis
meiosis
_____ results in 23 chromosomes in each daughter cell.
Mitosis
Meiosis
_____ results in 46 chromosomes in each daughter cell.
Mitosis
Meiosis
_____ results in the formation of somatic cells.
Mitosis
Meiosis
_____ results in the formation of gametes.
Mitosis
Meiosis
_____ is the failure of one or more pairs of homologous chromosomes or sister chromatids to separate normally during nuclear division, usually resulting in an abnormal distribution of chromosomes in the daughter nuclei.
Nondisjunction
Crossing over
Translocation
Inversion
_____ results from the failure of one or more pairs of homologous chromosomes or sister chromatids to separate normally during nuclear division, usually resulting in an abnormal distribution of chromosomes in the daughter nuclei.
Down syndrome (trisomy 21)
Color blindness
Hemophilia
Huntington's disease
True or false, nondisjunction during mitosis can contribute to the development of some forms of cancer.
true
false
True or false, nondisjunction during meiosis can lead to a monosomy or trisomy condition.
true
false
In pea plants, white flower color is dominant to purple flower color.
true
false
In pea plants, flower color is inherited by _____.
simple dominance
codominance
incomplete dominance
sex-linked traits
How can a farmer ensure he only creates white flowered pea plants?
By crossing purple flowered plants with purple flowered plants.
By crossing purple flowered plants with white flowered plants.
By crossing white flowered plants with purple flowered plants.
By crossing white flowered plants with white flowered plants.
How do we know purple flowers are dominant to white flowers in pea plants?
Because crossing true breeding purple flowered plants with pure breeding white flowered plants leads to all purple flowered offspring.
Because crossing true breeding purple flowered plants with pure breeding white flowered plants leads to all white flowered offspring.
Because crossing true breeding white flowered plants with pure breeding purple flowered plants leads to all white flowered offspring.
Purple is not dominant to white.
What are the possible blood types of the children of a man with type AB blood (IAIB) and a woman with type O blood (ii)?
type A
type B
Both type A & type B are correct.
type O
What are the possible blood types of the children of a man who is heterozygous for type B and a woman with type O blood?
type O
type B
Both type B & type O are correct.
type A
True or false, a man with type AB blood and a woman with type O blood can have kids with type AB blood?
true
false
