WorksheetsIntro Genetics Vocab Concept Practice
Total questions: 11
Worksheet time: 22mins
Calculate the probability of getting (Rr) offspring in this Punnett square.
0:4, 0/4, 0%
1:3, 1/4, 25%
2:2, 2/4, 50%
3:1, 3/4, 75%
4:0, 4/4, 100%
In rabbits, the allele B for black hair is dominant over the allele b for brown hair. Calculate the probability of homozygous dominant (BB) offspring resulting from a cross between two heterozygous (Bb) parents
0:4, 0/4, 0%
1:3, 1/4, 25%
2:2, 2/4, 50%
3:1, 3/4, 75%,
4:0, 4/4, 100%,
In rabbits, the allele B for black hair is dominant over the allele b for brown hair. Calculate the probability of heterozygous offspring resulting from a cross between a heterozygous parent and a homozygous recessive (bb) parent
0:4, 0/4, 0%
1:3, 1/4, 25%
2:2, 2/4, 50%
3:1, 3/4, 75%
4:0, 4/4, 100%
In rabbits, the allele B for black hair is dominant over the allele b for brown hair. Calculate the probability of heterozygous offspring resulting from a cross between a homozygous dominant parent and a homozygous recessive parent.
0:4, 0/4, 0%
1:3, 1/4, 25%
2:2, 2/4, 50%
3:1, 3/4, 75%
4:0, 4/4, 100%
In rabbits, the allele B for black hair is dominant over the allele b for brown hair. Calculate the probability of homozygous dominant offspring from a cross between a heterozygous parent and a homozygous recessive parent
0:4, 0/4, 0%
1:3, 1/4, 25%
2:2, 2/4, 50%
3:1, 3/4, 75%
4:0, 4/4, 100%
If the offspring of a recessive parent all have the dominant trait, then the genotype of the other parent being tested is
homozygous recessive
homozygous dominant
heterozygous
Both A & B
If some of the offspring in a test cross show the recessive trait but not all, then the genotypes of the individuals being tested are
homozygous recessive
homozygous dominant
heterozygous
Both A & B
If you want to determine if an individual with a dominant phenotype is heterozygous or homozygous for a trait, you always cross the individual with a _____________________ individual.
homozygous recessive
homozygous dominant
heterozygous
All possibilities can prove this true
The percent of homozygous recessive offspring resulting from a cross between two homozygous dominant individuals is
100%
75%
50%
25%
0%
The fraction of heterozygous offspring resulting from a cross between two heterozygous individuals is
0/4
1/4
2/4
3/4
4/4
What are the odds (ratio) that a gamete (“kid”) from a plant with a Tt genotype will get a t allele is
0:2
1:1
2:0
I don't understand ratios.
