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WorksheetsMendelian Genetics
Total questions: 50
Worksheet time: 52mins
Name
Class
Date
1.
What is the phenotype in the bottom right square? (Yellow is dominant and green is recessive)
a)
yy
b)
Yy
c)
yellow
d)
green
2.
Which of the following is the genotype for a homozygous recessive trait?
a)
gg
b)
Gg
c)
GG
3.
What % of the offspring in the Punnet square are heterozygous?
a)
25%
b)
50%
c)
75%
d)
100%
4.
What type of letters are used to show a trait is dominant?
a)
capital
b)
lowercase
5.
pp is an example of why type of genotype?
a)
homozygous recessive
b)
heterozygous recessive
c)
homozygous dominant
d)
heterozygous dominant
6.
PP is what type of genotype?
a)
homozygous recessive
b)
heterozygous recessive
c)
homozygous dominant
d)
homozygous recessive
7.
Pp is an example what type of genotype?
a)
homozygous recessive
b)
homozygous dominant
c)
heterozygous dominant
8.
What is one or more alternative forms of a gene?
a)
chromosome
b)
genotype
c)
phenotype
d)
allele
9.
What type of letter show s a recessive trait?
a)
capital
b)
lowercase
10.
What is a trait that can be hidden?
a)
dominant
b)
recessive
c)
sneaky
d)
recess time
11.
What is the transmission of traits from parent to offspring?
a)
heredity
b)
genetics
c)
cell bio
d)
chem
12.
What is a trait that will always show itself?
a)
recessive
b)
dominant
c)
one from the dad
d)
one from the mom
13.
This is the term for genes a person has for a trait?
a)
genotype
b)
phenotype
14.
This is the physical appearance of a trait.
a)
genotype
b)
phenotype
15.
a percent, ratio, or fraction that describes how likely it is that an event will occur
a)
ethics
b)
biotechnology
c)
probability
d)
hybrid
16.
diagram predicting the possible gene combinations that might result from a genetic cross
a)
recessive
b)
pedigree
c)
Punnett square
d)
F1 generation
17.
A _______ is an alternative form a gene.
a)
chromosome
b)
sister chromatid
c)
allele
d)
telomere
18.
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
19.
"The Great White Shark was 20 feet in length. Phenotype or Genotype?
a)
phenotype
b)
genotype
20.
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
21.
A physical characteristic that can be passed from parent to offspring.
a)
behavior
b)
trait
c)
strong muscles
d)
ability to fly a plane.
22.
Red (R) is dominant over white (r). How can a flower be white?
a)
It can have RR and be white.
b)
It has to have rr.
c)
It has to have rR
d)
There is no way it can be white until the third generation.
23.
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%
24.
If green is dominant over purple, then what is the genotype for this individual?
a)
Purple
b)
Green
c)
GG
d)
gg
25.
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
26.
3.If two white rabbit produce a black offspring, the parent’s genotypes for color must be:
a)
heterozygous
b)
homozygous black
c)
homozygous white
d)
not enough information was given
27.
In Mendel's pea plants, the homozygous recessive phenotype was white flowers. If Mendel crossed two homozygous recessive pea plants, what color flowers would be seen in the offspring?
a)
white and purple
b)
white
c)
purple
d)
lavendar
28.
What percentage of the offspring will be purebred dominant?
a)
0%
b)
25%
c)
50%
d)
75%
29.
True or False:
A heterozygous dominant trait can be written as BB.
A heterozygous dominant trait can be written as BB.
a)
True
b)
False
30.
D = dimples d = no dimples
What is the genotype for a homozygous recessive offspring?
What is the genotype for a homozygous recessive offspring?
a)
DD
b)
Dd
c)
dd
31.
Round (R) seeds are dominant to wrinkled (r) seeds.
What is the genotype for a homozygous dominant offspring?
What is the genotype for a homozygous dominant offspring?
a)
RR
b)
Rr
c)
rr
32.
If two purebred species (BB) are crossed, what percentage of their offspring would be BB?
a)
25%
b)
50%
c)
75%
d)
100%
33.
Short hair (S) is dominant to long hair (s).
What is the genotype for an offspring with long hair?
What is the genotype for an offspring with long hair?
a)
SS
b)
Ss
c)
ss
34.
What percentage of the offspring will be heterozygous dominant?
a)
100%
b)
75%
c)
50%
d)
25%
35.
The "Father of Genetics"
a)
Isaac Newton
b)
Gregor Mendel
c)
Albert Einstein
d)
Robert Hooke
36.
If a trait is homozygous the letters are the
a)
Same
b)
Different
37.
If you are homozygous recessive, the genotype would be
a)
AA
b)
aa
c)
Aa
38.
If you are homozygous dominant, the genotype would be
a)
AA
b)
aa
c)
Aa
39.
If a trait is heterozygous, the letters (alleles)are
a)
The same
b)
Different
40.
If you are heterozygous, your genotype would be
a)
AA
b)
aa
c)
Aa
41.
Another term for homozygous is
a)
Hybrid
b)
Purebred
c)
Recessive
d)
Dominant
42.
Another term for heterozygous is
a)
Hybrid
b)
Purebred
c)
Dominant
d)
Recessive
43.
The law that states that when an organism is hybrid for a pair of contrasting traits, the dominant trait is the one that is shown.
a)
Law of Dominance
b)
Law of Independent Assortment
c)
Law of of Segregation
d)
Law of Incomplete Dominance
44.
A __________ is a segment of DNA that codes for a particular protein, which leads to a particular trait.
a)
Gene
b)
Allele
c)
Codon
d)
Nucleotide
45.
The dominant trait in this punnett square is
a)
yellow pea seeds
b)
green pea seeds
c)
there is no dominant seed
46.
Tt is-
a)
homozygous dominant
b)
homozygous recessive
c)
heterozygous
d)
none of these
47.
The letters on the TOP AND SIDE of a punnett square represent ______________.
a)
The combination of alleles in offspring.
b)
The possible alleles given by the parents following meiosis.
c)
The genotype and phenotype of offspring.
d)
The results of genetic mutations in offspring.
48.
Why do we see only tall plants in the second generation?
a)
The gene for tall height is dominant
b)
The gene for short height is dominant
c)
The gene for tall height is recessive
d)
The parents did not have the tall gene
49.
Select all that would be considered phenotypes:
a)
Blonde
b)
Rr
c)
Short
d)
rr
50.
Select all that would be considered genotypes:
a)
Blonde
b)
Rr
c)
Short
d)
rr
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