WorksheetsGenetics DOK 2 Review
Total questions: 22
Worksheet time: 11mins
Name
Class
Date
1.
What does coiled DNA form?
a)
a chromosome
b)
a spring
c)
an allele
d)
a cell
2.
What is part C on this image?
a)
DNA
b)
a gene
c)
phenotype
d)
chromosome
3.
What is the small segment of a chromosome that codes for a trait called? Hint it is part B on this image
a)
chromosome
b)
gene
c)
DNA
d)
phenotype
4.
Human body cells have how many chromosomes?
a)
23
b)
46
c)
12
d)
it depends on the person
5.
Human reproductive or sex cells have how many chromosomes?
a)
23
b)
46
c)
92
d)
12
6.
If brown fur is dominant over white fur, and a rabbit has the genotype bb, what color is its fur?
a)
grey
b)
brown
c)
striped
d)
white
7.
If brown fur is dominant over white fur and a rabbit has brown fur what are the possible genotypes that the rabbit may have for fur?
a)
Bb
b)
BB
c)
bb
d)
Bb or BB
8.
which of the following represents possible phenotypes of an organism?
a)
BB, Bb, bb
b)
tall, short
c)
TT,tt,Tt
d)
happy, sad
9.
What is the phenotypic ratio in this image? if we are using the brown fur(B) white fur (b)examples
a)
100%Brown fur
b)
100%Bb
c)
50% brown fur, 50% white fur
d)
50%B 50%b
10.
What is the genotypic ratio of the punnet square? if we are using the key W= white fur and w=pink fur
a)
25%pink fur 75% white fur
b)
100% white fur
c)
25%WW 50%Ww 25%ww
11.
homozygous dominant?
a)
BB
b)
bb
c)
Bb
d)
BB, bb
12.
heterozygous?
a)
BB
b)
Bb
c)
bb
13.
homozygous recessive?
a)
BB
b)
Bb
c)
bb
d)
BB, bb
14.
Mrs. Macoff has 3 sons what is the probability that her fourth child will be a girl? (before I told you it was a girl)
a)
50%
b)
75%
c)
25%
15.
A human body cell has 46 chromosomes after meiosis a human sex cell will have how many chromsomes?
a)
23
b)
46
c)
92
d)
12
16.
What process creates human reproductive (sex) cells?
a)
sexual reproduction
b)
mitosis
c)
asexual reproduction
d)
meiosis
17.
How many cells do you have at the end of mitosis?
a)
1
b)
4
c)
2
d)
3
18.
how many cells do you have at the end of meiosis?
a)
4
b)
3
c)
2
d)
1
19.
different variations of a trait are?
a)
alleles
b)
phenotypes
c)
genotypes
d)
chromosomes
20.
select the answer telling four key traits of meiosis not mitosis
a)
1. Body cells for growth and repair 2. 46 chromosomes in original cell and each of the daughter cells 3. Asexual reproduction 4. Produce identical cells
b)
1. Makes gametes for sexual reproduction 2. 46 chromosomes in original cell and 23 in each of the daughter cells 3. Makes sex cells for sexual reproduction 4. Produces cells with half the DNA
c)
Both create new cells -DNA replication happens once -begins with 46 chromosomes
21.
select the answer telling four key traits of mitosis not meiosis
a)
1. Body cells for growth and repair 2. 46 chromosomes in original cell and each of the daughter cells 3. Asexual reproduction 4. Produce identical cells
b)
1. Makes gametes for sexual reproduction 2. 46 chromosomes in original cell and 23 in each of the daughter cells 3. Makes sex cells for sexual reproduction 4. Produces cells with half the DNA
c)
Both create new cells -DNA replication happens once -begins with 46 chromosomes
22.
select the answer detailing the similarities between mitosis and meiosis
a)
1. Body cells for growth and repair 2. 46 chromosomes in original cell and each of the daughter cells 3. Asexual reproduction 4. Produce identical cells
b)
1. Makes gametes for sexual reproduction 2. 46 chromosomes in original cell and 23 in each of the daughter cells 3. Makes sex cells for sexual reproduction 4. Produces cells with half the DNA
c)
Both create new cells -DNA replication happens once -begins with 46 chromosomes
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