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WorksheetsGenetics 4
Total questions: 35
Worksheet time: 21mins
Name
Class
Date
1.
Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed?
a)
0 %
b)
25%
c)
50%
d)
75%
2.
Two mice heterozygous for red eyes mate. What is the expected genotypic ratio of their offspring?
a)
1 RR: 1 Rr: 1 rr
b)
0 RR: 4 Rr: 0 rr
c)
1 RR: 2 Rr: 1 rr
d)
1 RR: 1 Rr
3.
A corn plant heterozygous for tall sprouts mates with a corn plant with short sprouts. If tall sprouts are dominant, how many different phenotypes are possible in the offspring?
a)
1
b)
2
c)
3
d)
4
4.
Which of the following is a phenotype?
a)
Aa
b)
red hair
c)
heterozygous
d)
DNA
5.
Changes in DNA sequences that affect genetic information are known as...
a)
Replication
b)
Mutations
c)
Transformation
d)
Translation
6.
Where does DNA replication take place?
a)
Nucleus
b)
Ribosome
c)
Cytoplasm
d)
Golgi Body
7.
In DNA which is a correct base pairing?
a)
A with G
b)
G with T
c)
A with U
d)
A with T
8.
RNA is different from DNA in ___
a)
RNA is single stranded
b)
RNA has uracil
c)
RNA has the sugar ribos
d)
All of these
9.
A single-base mutation in a DNA sequence that is GTCATA would be...
a)
GTCTTA
b)
GGTTCCAATTAA
c)
GTCCCT
d)
ATACTG
10.
Which type of RNA brings the information in the genetic code form the nucleus to other parts of the cell?
a)
rRNA
b)
tRNA
c)
mRNA
d)
RNA polymerase
11.
Both parents in this Punnet square
a)
are homozygous dominant
b)
are homozygous recessive
c)
are heterozygous
d)
have blue eyes
12.
How many boxes would say BB?
a)
1
b)
2
c)
4
d)
0
13.
Replicate the following strand of DNA:
AATCATGGA
AATCATGGA
a)
AATCATGGA
b)
TTAGTACCT
c)
UUAGUACCU
d)
GGATAUCUA
14.
How do two purple flowers produce white flower offspring?
a)
They cant have white flowered offspring
b)
Both flowers are heterozygous and can pass on the white allele
c)
They are both homozygous Dominant
d)
They do not have the recessive allele in their genotype
15.
the physical appearance
a)
Heterozygous
b)
Homozygous
c)
Genotype
d)
Phenotype
16.
Different genes, or alelles
a)
Heterozygous
b)
Homozygous
c)
Genotype
d)
Phenotype
17.
Same genes, or alelles
a)
Heterozygous
b)
Homozygous
c)
Genotype
d)
Phenotype
18.
genes written as letters
a)
Heterozygous
b)
Homozygous
c)
Genotype
d)
Phenotype
19.
Phenotype
a)
Tt
b)
GG
c)
Tall
d)
Ff
20.
The Punnett square above shows a cross between a homozygous dominant genotype for hair color and a heterozygous genotype for hair color. Which conclusion can be drawn from the Punnet square above?
a)
The parents will have four offspring.
b)
Two of the offspring will be homozygous recessive.
c)
Only two of the offspring will have the same hair color.
d)
All of the offspring will have the same hair color.
21.
Having freckles is a dominant trait in humans. A girl has freckles, but her brother does not. What must the girl's parents’ genotypes be for this to be possible?
a)
FF and FF
b)
ff and ff
c)
Ff and Ff
d)
FF and FF
22.
How many types of RNA are there?
a)
1
b)
2
c)
3
d)
4
23.
mRNA stands for
a)
my RNA
b)
messenger RNA
c)
mitosis RNA
d)
mutated RNA
24.
What is the function of mRNA?
a)
storage of food
b)
prevents mutations
c)
provides energy
d)
carries genetic message
25.
What structure in a cell is the site for making proteins?
a)
ribosomes
b)
mitochondria
c)
lysosome
d)
Golgi body
26.
Which base is normally used in the synthesis of RNA but not in DNA?
a)
adenine
b)
uracil
c)
cytosine
d)
guanine
27.
Which nucleic acid carries amino acids to the ribosomes?
a)
DNA
b)
mRNA
c)
rRNA
d)
tRNA
28.
Which event takes place first during DNA replication?
a)
a single-stranded RNA molecule is formed
b)
tRNA links to the amino acids
c)
Free nucleotides are bonded together in the correct sequence
d)
The DNA molecule "unzips" along weak hydrogen bonds
29.
How many chromosomes do you get total from both parents
a)
55
b)
24
c)
23
d)
46
30.
If you are Brown eyed like your mom, but your dad is blue eyed did you receive a dominate from your mom or a ressivce.
a)
ressivce
b)
Dominate
c)
Hidden trait
d)
i haven't a idea
31.
Which is a example of a inherited trait
a)
Curly Hair
b)
Making a sandwich
c)
putting on makeup
d)
writing cursive
32.
What is a example of a learned trait
a)
Curly hair
b)
riding a bike
c)
brown eyes
d)
being a pretty girl
33.
In squash plants, yellow fruit (Y) is dominant to white fruit (y). If two plants heterozygous for yellow fruit are crossed, what are the possible genotypes of the offspring?
a)
YY, Yy
b)
Yy
c)
YY, yy
d)
YY, Yy, and Yy
34.
Red flower color is dominant to white flower color in rose plants. What is the expected result of a cross between two heterozygous rose plants?
a)
100% red
b)
75% red, 25% white
c)
50% red, 50% white
d)
75% white, 25% red
35.
Dominant alleles are represented by a:
a)
Male gene
b)
lowercase letter
c)
recessive trait
d)
capital letter
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