WorksheetsGenetics Pre
Total questions: 32
Worksheet time: 19mins
Name
Class
Date
1.
Which of the following terms refers to the different possibilities of a gene?
a)
chromosome
b)
DNA
c)
Punnett Squares
d)
allele
2.
Brown fur color is dominant over black fur color. Which of the following is the actual genotype of ALL of the offspring in the next generation of this cross for fur color?
AA x aa
AA x aa
a)
AA
b)
Aa
c)
aa
d)
brown fur
3.
If something is heterozygous, it is also...
a)
purebred
b)
hybrid
c)
dominant
d)
recessive
4.
Another word for homozygous is...
a)
purebred
b)
hybrid
c)
heterozygous
d)
dominant
5.
If a pea plant were homozygous recessive for height, how would its alleles be represented?
a)
TT
b)
Tt
c)
tt
d)
tT
6.
What is the purpose of meiosis?
a)
repair damaged tissue
b)
replace dead cells
c)
to grow
d)
to make gametes (sex cells)
7.
According to the Law of Segregation, alleles are separated during the process of _____________.
a)
Mitosis
b)
Meiosis
c)
Osmosis
d)
Translation
8.
What gametes can be made from this parents genes?
AaBb
AaBb
a)
AA, aa, BB, bb
b)
AB, ab
c)
A, a, B, b
d)
AB, Ab, aB, ab
9.
Where is all the genetic information in a cell?
a)
Nucleus
b)
Nucleotides
c)
Chromosomes
d)
Cytoplasm
10.
What does DNA stand for?
a)
Deoxyribonucleic Acid
b)
Deoxyribose Enzymes
c)
Deoxyribose Messenger
d)
Retro deoxyribose Acis
11.
How many chromosomes do you get from each parent?
a)
22
b)
23
c)
44
d)
46
12.
The genetic transmission (passing on) of characteristics from parents to offspring.
a)
Inheritance
b)
Genotype
c)
Phenotype
d)
Genetics
13.
A trait that will only be expressed in the absence of the allele for the dominant trait.
a)
Dominant
b)
Recessive
c)
Pure Breeding
d)
Hybrid
14.
An individual who has two identical alleles for a characteristic
a)
Carrier
b)
Complete dominance
c)
Heterozygous
d)
Homozygous
15.
The 'father of genetics' studied the inheritance of pea plants.
a)
Gregor Mendel
b)
Crick and Mendel
c)
George Mendel
d)
John Mendel
16.
Number of chromosomes in a body cell (somatic cell)
a)
23
b)
44
c)
46
d)
2
17.
Number of chromosomes in a sex cell (gamete)
a)
23
b)
44
c)
46
d)
2
18.
What is the genotype for a male?
a)
Tt
b)
GG
c)
XX
d)
XY
19.
What is the genotype for an egg cell
a)
Tt
b)
GG
c)
XX
d)
XY
20.
Which of the following is a sex cell?
a)
Chromosome
b)
Egg
c)
Gene
d)
Trait
21.
The passing of traits from one generation to another.
a)
Cell Division
b)
Dominance
c)
Heredity
d)
Recessiveness
22.
A structure found in the nucleus of a cell that contains the genetic information (DNA).
a)
Chloroplast
b)
Chromosome
c)
Gene
d)
Trait
23.
A segment of DNA found on a chromosome that determines the inheritance of a particular trait.
a)
Cell
b)
Gene
c)
Phenotype
d)
Trait
24.
One gene from an inherited pair is called this.
a)
an allele
b)
a cell
c)
a chromosome
d)
a trait
25.
The set of genes carried by an organism is called this.
a)
dominant
b)
genotype
c)
phenotype
d)
recessive
26.
The physical expression of the genes is called this.
a)
allele
b)
chromosome
c)
gene
d)
phenotype
27.
A trait that will always be expressed in the phenotype if it is in the genotype.
a)
acquired
b)
dominant
c)
hybrid
d)
recessive
28.
Alleles for this type of trait are represented by capital letters.
a)
acquired
b)
dominant
c)
hybrid
d)
recessive
29.
Alleles for these traits are represented by lowercase letters.
a)
acquired
b)
dominant
c)
hybrid
d)
recessive
30.
In cows, the allele for a white face (W) is dominant to the allele for a solid color all over (w). Which choice is a phenotype for a cow that has a recessive genotype?
a)
w
b)
ww
c)
white face
d)
solid color
31.
If both a dominant and a recessive allele are in the genotype, which trait will be expressed?
a)
acquired
b)
dominant
c)
hybrid
d)
recessive
32.
In people, the having the second toe longer than the first (T) is dominant to the big toe being longer (t). Which choice is a genotype for the person in the picture?
a)
big toe longer
b)
second toe longer
c)
Tt
d)
tt
100 %
