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WorksheetsHeredity/Genetics
Total questions: 20
Worksheet time: 10mins
Different forms of a trait that a gene may have is called
DNA
mutation
genetics
alleles
Two identical alleles for a trait is known as
codominance
homozygous
heterozygous
mutation
A physical appearance(what an organism looks like) of an organism is called
genotype
cells
phenotype
fragmentation
Which of the following answer choices is NOT an example of a phenotype shown in an organism?
hair color
eye color
the intelligence of the organism
organism's height
A trait that dominates or covers up the other form of the trait
homozygous
heterozygous
recessive
dominant
PP are two capital letters represent the _______ of the organism.
dominant trait
dominant allele
recessive trait
recessive allele
A trait that is covered up
dominant trait
genotype trait
recessive trait
phenotype trait
Which scientist was a monk who studied different characteristics of pea plants?
Robert Hooke
Gregor Mendel
Reginald Punnett
Sir Issac Newton
The genes of an organism is called
genotype
phenotype
DNA
chromosomes
Genotype is
physical appearance
feather color
genetic makeup
stem height
A genetic cross of a dominant(R) with a recessive (r) makes a
homozygous
heterozygous
Punnett square
pollination
If a homozygous black cat (BB) is crossed with a homozygous white cat (bb), what is the probability of having a cat with white fur?
25%
0%
50%
75%
Which of the following answer choices represents a homozygous organism?
Rr
Rr, Tt
RR, rr
Rr, Bb, Tt
Which of the following answer choices represent a heterozygous organism?
RR, rr, TT
BB,tt, RR
rr, TT, bb
Bb, Yy, Tt
What does an RR gene mean?
two dominant alleles
two recessive alleles
a least one dominant allele
one dominant and one recessive allele
What is the primary generation for a Punnett square?
F1 generation
F2 generation
P1 generation
G generation
Homozygous alleles are
the alleles are absent
the alleles are different
the alleles are the identical
the alleles are present
In a heterozygous genotype, the ______allele takes over the phenotype.
recessive
dominant
both
lower case
Which scientist created the Punnett square based on Mendel's works?
Bill Nye
Reginald Mendel
Gregor Mendel
Reginald Punnett
A tall plant (TT) is crossed with a tall plant (Tt). What is the phenotype of the offspring?
25% homozygous dominant; 75% heterozygous dominant: all are tall
50% homozygous dominant; 50% heterozygous dominant; all are tall
50% heterozygous dominant; 50% homozygous dominant; all are short
25% heterozygous dominant; 50% homozygous dominant; all are short
