WorksheetsGenetics and Heredity
Total questions: 35
Worksheet time: 35mins
Name
Class
Date
1.
Who is considered the "father" of modern genetics?
a)
Einstein
b)
Mendel
c)
Disney
d)
Trump
2.
What type of "square" helps us solve genetic problems?
a)
carpenter square
b)
Mendel square
c)
Punnett square
d)
genetic square
3.
TT,tt,PP,pp,SS,ss are examples of alleles that are?
a)
homozygous
b)
heterozygous
c)
different
d)
homologous
4.
The exact genetic makeup of an organism, such as RR, Tt, PP is its?
a)
phenotype
b)
dominance
c)
genotype
d)
trait
5.
Y for yellow body is dominant over y for blue body. What alleles would produce yellow bodies?
a)
YY,yy
b)
Yy,yy
c)
YY only
d)
YY,Yy
6.
If "T" is the allele for tall and "t" is the allele for short, then Tt would produce?
a)
tall
b)
short
c)
medium
d)
not enough info
7.
A physical characteristic that can be passed from parent to offspring.
a)
behavior
b)
trait
c)
strong muscles
d)
ability to fly a plane.
8.
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
9.
What is a phenotype
a)
The genetic make up (code)
b)
The physical trait
10.
having two of the same genes for the trait (sometimes called purebred).
a)
homozygous
b)
hetrozygous
c)
protein
d)
chromosome
11.
having two different genes for a trait (sometimes called hybrid).
a)
protein
b)
homozygous
c)
heterozygous
d)
genotype
12.
G = green, g = yellow
The genotype for a yellow plant is...
The genotype for a yellow plant is...
a)
GG
b)
Gg
c)
gg
d)
all of the choices result in yellow
13.
What does heterozygous mean?
a)
An organism that has the same genes for a trait (TT or tt)
b)
An organism that has different genes for a trait (Tt)
c)
When neither gene is fully dominant; offspring is a mixture of both
d)
the different forms of a trait (hair color--> brown, blonde, red
14.
Incomplete dominance means that the traits are
a)
expressed equally
b)
dominant
c)
recessive
d)
blended
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.
The science of heredity
a)
heredity
b)
genetics
c)
trait
d)
gene
17.
The passing of traits from parents to offspring
a)
heredity
b)
genetics
c)
trait
d)
alleles
18.
The different forms of a gene
a)
heredity
b)
genetics
c)
gene
d)
alleles
19.
This trait always shows up in an organism when the allele is present
a)
dominant allele
b)
codominance
c)
probability
d)
recessive allele
20.
This trait is hidden whenever the dominant allele is present
a)
dominant allele
b)
codominance
c)
recessive allele
d)
Punnett Square
21.
A chart that shows all the possible combinations of alleles that can result from a genetic cross
a)
dominant allele
b)
codominance
c)
probability
d)
Punnett Square
22.
The inherited combination of alleles is called the ______
a)
genotype
b)
phenotype
c)
chromosome
d)
DNA
23.
An organism's inherited appearance is called _______.
a)
genotype
b)
phenotype
c)
chromosome
d)
DNA
24.
Purple flowers are dominant to white flowers. What would the phenotype for a flower with genotype pp be?
a)
purple
b)
white
c)
pink
d)
yellow
25.
Purple flowers are dominant to white flowers. What would the phenotype for a flower with genotype Pp be?
a)
purple
b)
white
c)
pink
d)
yellow
26.
Purple flowers are dominant to white flowers. What would the phenotype for a flower with genotype PP be?
a)
purple
b)
white
c)
pink
d)
yellow
27.
A trait that is apparent only when two recessive alleles for the same characteristic are inherited is called
a)
dominant
b)
recessive
c)
homozygous
d)
heterozygous
28.
TRUE OR FALSE: If at least one allele is a capital letter in the pair of genes, the recessive trait will be dominant.
a)
True
b)
False
29.
If you crossed a PP (purple) with a pp (white), what would the phenotypes be?
a)
all white
b)
all tall
c)
all purple
d)
1/2 white, 1/2 purple
30.
If you cross a white flower (pp) with a purple flower (PP), the possible genotypes of the offspring are
a)
PP and pp
b)
All Pp
c)
All PP
d)
All pp
31.
If you cross two rabbits that have the genotype Bb, how many possible genotypes can be found in the offspring?
a)
one
b)
two
c)
three
d)
four
32.
Which term correctly describes an individual with a pair of the same alleles for a trait?
a)
homologous
b)
heterozygous
c)
homozygous
d)
heterologus
33.
Of 12 hamsters just born, 9 have brown fur and 3 have white fur. The trait for white fur is considered to be ________.
a)
recessive
b)
weak
c)
strong
d)
dominant
34.
A pea plant is heterozygous for height (Tt) and it is crossed with a homozygous short (tt) plant. Use a Punnett square to determine the probability of one of their offspring being short.
a)
100%
b)
75%%
c)
50%
d)
25%
35.
Look at the Punnett square. If the two parents represented in the Punnett square have four offspring, what does the Punnett square tells you?
a)
two of the offspring will definitely be heterozygous.
b)
one of the offspring will definitely show the recessive trait.
c)
there is a 50% chance for each of the 4 offspring to have the genotype Rr.
d)
there is a greater chance for the offspring to be RR than rr.
100 %
