WorksheetsGenetics Review
Total questions: 50
Worksheet time: 50mins
Heterozygous means ________________.
G = green, g = yellow
The genotype for a yellow plant is ______.
RR or rr
DNA
a phenotype
In this Punnett Square, which is the dominant trait?
The B stands for bud.
W=white hair
w= non-white hair
If you cross a horse with WW and a horse with ww, what fraction of the offspring would be expected to have white hair?
Which of the following alleles is homozygous recessive?
T - tall and t = short
In the Punnett Square below, what belongs in the missing square
Which of the following is homozygous dominant?
In a Punnett square each box represents the probability of a(n) _______ trait.
offspring's
parent's
A diagram that shows all the possible combinations of alleles that can result from a genetic cross
________ is the study of how traits are passed on from generation to generation, or inherited.
Dominant traits
Ratio
Phenotype
Genetics
Brown hair is an example of which of the following?
Genotype
Phenotype
The physical appearance of a trait is known as the_________.
The different forms of a gene are called _________.
What are the possible phenotype(s) of the offspring? (A-Brown hair; a-blond hair)
50 % Brown Hair and 50% Blond Hair
25 % Brown Hair and 75% Blond Hair
75 % Brown Hair and 25% Blond Hair
0% Brown Hair and 100% Blond Hair
Which genotype below best fits in box 2?
What is the probability of heterozygous offspring?
0%
100%
50%
25%
Who studied different characteristics of pea plants by cross-pollinating plants?
Gregor Mendel
Albert Punnett
Sir Isaac Newton
David Kuster
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?
100%
0%
75%
25%
What does RR mean?
two dominant alleles
heterozygous alleles
one dominant and one recessive allele
Genotype or Phenotype: Freckles
Genotype
Phenotype
Genotype or Phenotype: ff
Genotype
Phenotype
Homozygous or Heterozygous: ff
Homozygous
Heterozygous
Homozygous or Heterozygous: Ff
Homozygous
Heterozygous
What is a trait that shows only if both parents pass it on?
recessive
dominant
Which of the following genotypes is homozygous (purebred) recessive?
An allele that only needs one copy to produce its trait is called _______.
An allele that needs 2 copies to produce its trait is called ________.
Hereditary material with the instructions to make an organism is called ________.
DNA
phenotype
heterozygous
What percentage of the possible offspring will be heterozygous?
What is the genotype for a homozygous dominant offspring?
What is the genotype for a homozygous recessive offspring?
What is a section of DNA containing instructions for making a specific protein?
chromosome
Which of the following is NOT an example of a trait?
eye color
ear shape
species
body height
