WorksheetsGenetics Quiz
Total questions: 15
Worksheet time: 10mins
What did Gregor Mendel study with the pea plants?
cross pollination
inheritance of traits
flowering
If there are 2 plants with the genotypes TT and Tt then the plants would have
the same phenotype
different phenotypes
If an organism has 2 identical alleles for a particular trait then it is
heterozygous
homozygous
hybrid
Mendel’s principles of genetics apply to
plea plants only
plants only
all organisms
animals only
A pea plant that has 2 different alleles for a trait means they are
homozygous
heterozygous
purebred
How many recessive alleles for a trait must an organism inherit in order to show that trait?
1
2
3
4
what is heredity?
the passing of traits from parents to offspring
the study of heredity
the study of genetics
What is an allele?
same forms of a gene
different forms of a gene
3 letters
If a Heterozygous Rr pea plant is crossed with a Heterozygous Rr pea plant, what would be the percentage that the offspring will be recessive rr?
50%
75%
25%
Type AO blood X type O blood
what would be the percentage that their offspring would be Type A blood?
25%
50%
100%
When 2 dominant alleles are both expressed are said to be
codominant
incomplete dominant
dominant
A cross involving a single trait is known as?
dihybrid
monohybrid
hybrid
If a pink flower is crossed with a pink flower, what percent of their offspring are expected to be pink-flowered?
R= Red W= White
50%
25%
100%
If 1 red and 1 white flower is crossed, what percent of their offspring are expected to be pink-flowers?
R= Red W= white
50%
75%
100%
25%
What is an example of a heterozygous genotype?
AA
aa
AAaa
Aa
