WorksheetsMendelian Genetics
Total questions: 16
Worksheet time: 15mins
A genotype where only dominant alleles were passed on
from both parents for one trait
Homozygous Recessive
Homozygous Dominant
Dihybrid
Heredity
A genotype where only recessive alleles
were passed on from both parents for one trait
Heredity
Homozygous Dominant
Homozygous Recessive
Phenotype
A genotype where one dominant and one recessive allele was passed on from both parents for one trait.
Allele
Homozygous Dominant
Homozygous Recessive
Heterozygous
The observable physical traits in an organism
Phenotype
Genotype
Homozygous Recessive
Homozygous Dominant
The genetic cross between two parents for one trait:
Mendelian Genetics
Dihybrid Cross
Monohybrid Cross
Homologous Alleles
If green feathers is dominant over purple feathers, then what is the genotype of a purple bird?
Purple
GG
Gg
gg
Two heterozygous brown eyed parents have a baby. What is the chance the baby is blue eyed? (brown = B)
0 %
25%
50%
75%
In rabbits, black fur (B) is dominant over brown fur (b). If an offspring has brown fur, but both parents have black fur, what is the genotype for the parents and the offspring?
Parents: BB and bb
Offspring: Bb
Parents: Bb and bb
Offspring: bb
Parents: Bb and Bb
Offspring: Bb
Parents: Bb and Bb
Offspring: bb
A homozygous brown mouse is crossed with a heterozygous brown mouse (tan is the recessive color).
Perform a punnett square cross and determine the phenotype percentage of the offspring.
100% tan
100% brown
50% brown and 50% tan
75% brown and 25% tan
A heterozygous tall pea plant is crossed with a short pea plant. (tall = T)
Perform a punnett square cross and determine the genotype percentage.
100% Tt
50% Tt
50% tt
75% Tt
25% tt
25% TT
50% Tt
25% tt
Kyree is heterozygous for wavy hair. If (W) is for wavy, and (w) is for straight, what is Kyree’s genotype & phenotype?
WW : wavy
ww : wavy
Ww : straight
Ww : wavy
In pea plants tall stems (T) are dominant over short stems(t) and round seeds (R) are dominant over wrinkled seeds (r).
Consider the following cross: TtRr X Ttrr
Find the number of possible phenotypes
2
4
16
8
In pea plants tall stems (T) are dominant over short stems(t) and round seeds (R) are dominant over wrinkled seeds (r).
Consider a cross between a plant heterozygous for both traits and a plant that has a short stem and is heterozygous for round seeds.
What is the probability of having tall, wrinkled seeded plants?
1/4
1/8
3/4
3/8
Grey fur (G) is dominant over white fur (g) and black eyes (B) are dominant over red eyes (b)
A male rabbit homozygous for grey fur and red eyes is crossed with a female rabbit with with white fur and is heterozygous for black eyes.
How many offspring, out of 16, have grey fur and black eyes (according to probability)?
4
8
12
16
Grey fur (G) is dominant over white fur (g) and black eyes (B) are dominant over red eyes (b)
A male rabbit homozygous for grey fur and red eyes is crossed with a female rabbit with with white fur and is heterozygous for black eyes.
How many offspring out of 16, have white fur and red eyes (according to probability)?
0
4
8
16
