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WorksheetsGenetics Test
Total questions: 35
Worksheet time: 9hrs 45mins
_______ is the passing of traits from parent to offspring.
Heredity
Genetics
Hybrid
Probability
Who was the father of genetics?
Albert Einstein
Issac Newton
Gregor Mendel
Watson and Crick
Which option is heterozygous ?
Tt
TT
Which option is homozygous ?
Zz
SS
The genetic makeup of an organism is its
heterozygous
punnett square
genotype
phenotype
A homozygous dominant dog with brown fur is crossed with a heterozygous dog with brown fur. What are the percentages of the possible genotypes?
100% BB
75% BB and 25%Bb
50 % BB and 50% Bb
50% Bb and 50% bb
Genotype refers to the ...
physical expression of the genes
the possible combination of alleles in a gene
whether an allele is dominant or recessive
how an organism will appear
Squidward has light blue skin, and his genotype for this trait is Bb. Would Squidward be considered a purebred or hybrid for light blue skin?
Purebred
Hybrid
An offspring will receive how many alleles from each parent to determine a specific trait?
one
two
three
five
Which of the following is a phenotype?
BB
Bb
bb
Blue eyes
G = green, g = yellow
The genotype for a yellow plant is...
GG
Gg
gg
all of the choices result in yellow
An allele whose trait only shows up when no dominant allele is present is called
hidden allele
dominant allele
recessive allele
present allele
Two heterozygous (Tt) tall pea plants are crossed. Which describes their offspring?
50% tall and 50% short
75% tall and 25% short
100% short
25% tall and 75% short
What does heterozygous mean?
An organism that has the same genes for a trait (TT or tt)
An organism that has different genes for a trait (Tt)
When neither gene is fully dominant; offspring is a mixture of both
the different forms of a trait (hair color--> brown, blonde, red
Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed?
0 %
25%
50%
75%
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?
1
2
3
4
An organism's appearance is known as its
heredity
phenotype
genotype
pedigree
Which of the following genotypes is a purebred?
Bb
Gg
bb
Dd
One form of a gene is called_______________
a DNA
a Phenotype
a trait
an allele
Which of the following alleles is homozygous recessive?
Tt
tt
TT
T
What percentage does each square in a punnett square represent?
25%
15%
20%
50%
Which of the following is an example of a phenotype?
dimples
TT
Tt
What is the difference between a dominant and a recessive trait?
A dominant factor will cover up the recessive trait.
A dominant factor is weaker than the recessive factor.
Both have the same effect on the organism.
Which of the following is an example of a homozygous dominant genotype?
RR
Rr
rr
Which of the following best describes the structure of a DNA molecule?
double helix
contains ribose
made of amino acids
contains Uracil
In a molecule of double-stranded DNA, the amount of Adenine present is always equal to the amount of its pair _____________.
cytosine
guanine
thymine
uracil
Which of the following is a base that is NOT contained in DNA?
Adenine
Thymine
Uracil
Guanine
Guanine bonds with ______________.
Adenine
Guanine
Cytosine
Thymine
What are the 4 nitrogen bases?
adenine, thymine, cytoplasm, and guanine
adenine, thymine, cytosine, and guanine
adenine, thymine, cytosine, and gylcerol
adenine, thymine, cytosine, and glucose
Which of the following terms means the same as heterozygous?
Purebred
Hybrid
Homozygous
Heterozygous
Yellow body color is dominant to blue. What letter would be used to represent the alleles?
Y
B
R
C
Which of the following options would be the correct genotype(s) for having yellow body color, which is dominant over blue?
YY
Yy
yy
YY or Yy
Where, in the eukaryotic cell, is DNA located?
ribosomes
nucleus
E.R.
cytoplasm
What is the percentage of offspring that have green pods?
100%
75%
50%
25%
What percentage of the offspring in the punnett square are shown as a hybrid?
100%
75%
50%
25%
