WorksheetsGenetics Quiz
Total questions: 17
Worksheet time: 11mins
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 does the law of dominance state?
all alleles are recessive
no alleles are dominant
some alleles are dominant and some are recessive
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 the parents are X H X h and X h Y, then what is the percentage that the children will have the recessive trait.
50%
25%
75%
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 A (Ai) blood X type O (ii) 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 r= 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 r= white
50%
75%
100%
25%
What is an example of a heterozygous genotype?
AA
aa
AAaa
Aa
