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WorksheetsBio Unit 4 Review
Total questions: 82
Worksheet time: 4hrs 30mins
This stage of the cell cycle is when DNA replicates.
G1
S
G2
Prophase
Which phase of mitosis is shown?
Prophase
Metaphase
Anaphase
Telophase
Which phase of mitosis is shown?
Prophase
Metaphase
Anaphase
Telophase
Which phase of mitosis is shown?
Prophase
Metaphase
Anaphase
Telophase
Green peas (G) are dominant to yellow peas (g). Cross a heterozygous green pea with a yellow pea. What is the genotype probability?
0% GG
100% Gg
0% gg
50% GG
0% Gg
50% gg
0% GG
50% Gg
50% gg
25% GG
50% Gg
25% gg
Green peas (G) are dominant to yellow peas (g). Cross a heterozygous green pea with a yellow pea. What is the phenotype probability?
100% green
0% yellow
50% green
50% yellow
75% green
25% yellow
25% green
75% yellow
Which of the following shows a homozygous dominant genotype?
HH
Hh
hh
Which of the following shows a homozygous recessive genotype?
HH
Hh
hh
Which of the following shows a heterozygous genotype?
HH
Hh
hh
What do the filled in squares mean on a pedigree?
Male with the trait
Male without the trait
Female with the trait
Female without the trait
What do the blank circles mean on a pedigree?
Male with the trait
Male without the trait
Female with the trait
Female without the trait
Green peas are dominant to yellow peas. The pedigrees below are tracking the green pea trait. Which of the following shows two heterozygous parents with two homozygous recessive sons and a homozygous dominant daughter?
The following describes ________ during mitosis. The chromosomes line up along the center of the cell and the spindle fibers attach to each chromosome.
The following describes _________ during mitosis. The spindle fiber splits the chromosomes and they move to opposite sides of the cell.
The following describes _________ during mitosis. Two new nuclei form, chromosomes are no longer visible, and the spindle fibers disappear.
prophase
metaphase
anaphase
telophase
The cell spends most of it's life in...
interphase
G2
cytokinesis
metaphase
Last stage of the cell cycle in which the cytoplasm divides to form two identical cells.
interphase
cytokinesis
prophase
telophase
During what phase of the cell cycle is DNA replicated?
G1 phase
G2 phase
S phase
M phase
Put the following stages of the cell cycle in order: G2, S, G1, M.
S, G1, G2, M
G1, S, G2, M
G1, M, G2, S
M, G1, S, G2
When one allele mask/hides the presence of another, the allele is ___. It is written using a capital letter.
recessive
hybrid
dominant
phenotype
An allele that is masked/hidden by another is ___. It is written using a lower case letter.
Phenotype
Homozygous
Dominant
Recessive
All the forms of a gene for any given trait
Hybrid
Alleles
Genetics
Heterozygous
the physical make-up of an organism
genotype
homozygous
heterozygous
phenotype
The genetic make-up of an organism
trait
gene
genotype
allele
How many are heterozygous?
0%
25%
50%
100%
How many are homozygous dominant?
100%
50%
25%
0%
How many daughters did the mother and father from the first generation have?
2
4
5
6
How many males are carriers?
2
3
4
5
Chickens can have black feathers, white feathers, or black & white speckled. What type of dominance does this show?
Incomplete dominance
Co-dominance
Sex-linked dominance
Mendelian dominance
Chickens can have black (B) feathers, white (W) feathers, or black & white speckled. Cross a black chicken with a speckled chicken. What are the genotypes?
BB x BW
BB x Bb
BB x WW
BW x BW
Chickens can have black (B) feathers, white (W) feathers, or black & white speckled. Cross a black chicken with a speckled chicken. What are the odds of having a black chicken?
0%
25%
50%
75%
Colorblindness is an X-linked recessive trait. Which of the following shows a FEMALE who has the disease?
XBXb
XbXb
XBY
XbY
Colorblindness is an X-linked recessive trait. Which of the following shows a FEMALE who is not colorblind, but is a carrier and can pass it down to her children.
XBXb
XbXb
XBY
XbY
Colorblindness is an X-linked recessive trait. Which of the following shows a MALE who has the disease?
XBXb
XbXb
XBY
XbY
Colorblindness is an X-linked recessive trait. Cross a colorblind male with a carrier female. What are the odds of having a colorblind child?
0%
25%
50%
75%
Which of the following shows a homozygous dominant genotype?
HH
Hh
hh
Which of the following shows a homozygous recessive genotype?
HH
Hh
hh
Which of the following shows a heterozygous genotype?
HH
Hh
hh
What type of inheritance do two alleles have if their traits blend together?
Incomplete Dominance
Co-Dominance
Mendelian Inheritance (Complete Dominance)
Homozygous Inheritance
Red hair (R) and white hair (W) are codominant in cows.
Cross a white cow (WW) with a red cow (RR).
What color will the calves be?
White
Red
Pink
Roan
(Mix of white spots and red spots)
You have two flowers. The red allele shows incomplete dominance over the white allele.
You breed a red flower (RR) with a white flower (rr).
What do you think the offspring will look like?
All red
All white
All pink
Half red, half white.
Red flowers (R) show incomplete dominance over white flowers (r). Cross two pink flowers (Rr).
What percentage of the offspring will have red flowers?
0%
25%
50%
75%
100%
Red hair (R) and white hair (W) are codominant in cows. They produce a cow with both red and white spots, called "roan", when mixed.
Cross a white cow (WW) with a roan cow (RW).
What percentage will be white?
0%
25%
50%
75%
100%
Red-green color blindness is an X-linked recessive trait. A color-blind woman and a man with normal vision have a son. What is the probability that the son is also color-blind?
What type of inheritance pattern is shown here?
Codominance
Incomplete dominance
If a person has type B blood, the phenotype is B. What can the genotype be?
IBIB or IBi
IAIA or IAi
IAIB
ii
If a person has type O blood, the phenotype is O. What can the genotype be?
IBIB or IBi
IAIA or IAi
IAIB
ii
What type of inheritance is determined by multiple genes and there can be a range of traits?
Codominance
Incomplete dominance
Polygenic traits
What phase is shown here? Hint: you are starting to see the nuclear membrane again!
Metaphase II
Telophase I
Telophase II
Metaphase I
What phase is this?
Hint: membrane is disappearing
Interphase II
Prophase I
Metaphase I
Anaphase II
Crossing Over
CROSSING OVER INCREASES
LIFE SPAN
GENETIC VARIATION
THE NUMBER OF OFF-SPRING
ALL ARE TRUE
Ends with diploid number of chromosomes
Mitosis
Meiosis
Both
Involves crossing over
Mitosis
Meiosis
Both
Chromosomes condense
Mitosis
Meiosis
Both
Produces four cells
Mitosis
Meiosis
Both
produces identical daughter cells
Mitosis
Meiosis
Both
for growth and repair
Mitosis
Meiosis
Both
produces haploid cells
Mitosis
Meiosis
Both
produces two cells
Mitosis
Meiosis
Both
produces non-identical cells
Mitosis
Meiosis
Both
begins with diploid parent cell
Mitosis
Meiosis
Both
