NEW
Font size
S
M
L
XL
WorksheetsGenetics and Heredity Test
Total questions: 28
Worksheet time: 2hrs 2mins
Name
Class
Date
1.
the genetic code for the gene
a)
phenotype
b)
genotype
c)
homozygous
2.
Which of the following is a phenotype?
a)
Aa
b)
red hair
c)
heterozygous genes
d)
mutated DNA
3.
Which of the following alleles is homozygous (purebred) recessive?
a)
Tt
b)
tt
c)
TT
d)
t
4.
In a heterozygous genotype, the ___________ allele takes over in the phenotype.
a)
recessive
b)
dominant
c)
lower case letter
d)
both
5.
T - tall and t = short
In the punnett square below, what belongs in the missing square
In the punnett square below, what belongs in the missing square
a)
tt
b)
Tt
c)
Bb
d)
TT
6.
Which of the following is homozygous dominant?
a)
Yy
b)
Y
c)
yy
d)
YY
7.
In a pedigree, what shape represents a male?
a)
circle
b)
square
c)
triangle
d)
diamond
8.
How many girls in this family express this recessive disorder?
a)
4
b)
5
c)
6
d)
7
9.
An offspring will receive how many alleles from each parent to determine a specific trait?
a)
one
b)
two
c)
three
d)
five
10.
Genotype refers to the ...
a)
physical expression of the genes
b)
the possible combination of alleles in a gene
c)
whether an allele is dominant or recessive
d)
how an organism will appear
11.
What is a phenotype
a)
The genetic make up (code)
b)
The physical trait
12.
the passing of genetic traits from parent to offspring.
a)
heredity
b)
trait
c)
gene
d)
allele
13.
having two of the same genes for the trait (sometimes called purebred).
a)
homozygous
b)
hetrozygous
c)
protein
d)
chromosome
14.
having two different genes for a trait (sometimes called hybrid).
a)
protein
b)
homozygous
c)
heterozygous
d)
genotype
15.
An allele whose trait only shows up when no dominant allele is present.
a)
hidden allele
b)
dominant allele
c)
recessive allele
d)
present allele
16.
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%
17.
One form of a gene is called_______________
a)
a DNA
b)
a Phenotype
c)
a trait
d)
an allele
18.
Which of the following genotypes is a purebred?
a)
Bb
b)
Gg
c)
bb
d)
Dd
19.
Dominant alleles are-
a)
capital
b)
lowercase
c)
both
d)
neither
20.
Recessive alleles are-
a)
capital
b)
lowercase
c)
both
d)
neither
21.
"The Great White Shark was 20 feet in length. Phenotype or Genotype?
a)
phenotype
b)
genotype
22.
The dominant trait is
a)
yellow pea seeds
b)
green pea seeds
c)
there is no dominant seed
d)
Jolly green giant
23.
Long hair is a dominant trait. Choose the BEST statement.
a)
This guinea pig received two dominant traits. (HH)
b)
This guinea pig cannot have a recessive allele. (h)
c)
This guinea pig could be homozygous dominant (HH) or heterozygous (Hh)
d)
This guinea pig is homozygous recessive (hh)
24.
This little guy has a recessive trait. Choose the best statement.
a)
Both parents gave him an "h". (hh)
b)
He has one "H" and one "h".
c)
He will die without hair.
d)
He is a baby and his hair will grow in a few more days.
25.
How many generations are shown in this pedigree?
a)
1
b)
2
c)
3
d)
4
26.
How many kids did the mother and father from the first generation have?
a)
2
b)
4
c)
5
d)
6
27.
How are individuals I-2 and III-5 related?
a)
Grandpa and grandson
b)
Mom and son
c)
Uncle and nephew
d)
Grandma and grandson
28.
What do half colored symbols represent?
a)
The individual is a carrier (heterozygous).
b)
The individual expresses the trait.
c)
The individual has both recessive alleles.
d)
The individual has both dominant alleles.
Reset
