WorksheetsHeredity
Total questions: 10
Worksheet time: 3hrs 30mins
In a mouse, black colored fur (F) is dominant over white colored fur (f). A cross between black colored mouse and white colored mouse is shown in the Punnett square below.The genotypes of offspring in box 1 and box 2 are ________.
1: ff 2:Ff
1:Ff 2: ff
1:Ff 2:Ff
1:FF 2:Ff
Use the picture to answer the question.
A cross between two brown eyed parents is shown above. Which statement BEST explains why blue eyes appear only in 25% of offspring?
It is a recessive trait.
It is a mutated trait.
It is a dominant trait.
It is an acquired trait.
In a cross between two pea plants, trait for yellow seed color appears when the expressed gene has one or both alleles for yellow color. Green color appears only when both alleles code for green color. What conclusion can be drawn from the statement?
Both yellow color and green color are acquired traits.
Yellow color is a normal trait while green color is a mutated trait.
Yellow color is a dominant trait while green color is a recessive trait.
Yellow color is a recessive trait while green color is a dominant trait.
The Punnett square shows a cross between a horse with a pure black (CC) coat and a horse with pure chestnut (cc) coat. What can be concluded about the trait of pure black coat in the offspring?
It is a dominant trait.
It is a recessive trait.
It is neither a dominant nor a recessive trait.
It is an acquired trait.
Look at the Punnett square.
If the two parents represented in the Punnett square have four offspring, what does the Punnett square tell you?
Two of the offspring will definitely have the genotype Aa.
It is more likely that two of them will have the genotype Aa than the genotype aa.
Each of the 4 offspring has a 50% chance of having genotype Aa.
It is less likely that two of them will have the genotype Aa than the genotype aa.
Two parents have the genotype Aa. Which statement best describes the possible genotypes of the offspring?
All their offspring will have the genotype Aa.
None of their offspring will have the genotype Aa.
On average 25 percent of their offspring will have the genotype Aa.
On average 50 percent of their offspring will have the genotype Aa.
In the cross between a brown haired rabbit (Bb) and a white haired rabbit (bb), what percentage of the offspring will exhibit the dominant trait and what percentage will exhibit the recessive trait (white fur)?
50% dominant and 50% recessive
0% dominant and 100% recessive
100% dominant and 0% recessive
75% dominant and 25% recessive
A particular variety of corn has two grain colors. Purple grain color (GG) is dominant over white grain color(gg). The Punnett square below shows the cross between two corn plants with purple grains.
What percentage of the offspring will have white grain color?
0%
25%
50%
75%
Two tall heterozygous pea plants are crossed. 56 tall plants and 14 short plants are produced from this cross. The allele for tallness is _________.
codominant
incomplete
recessive
dominant
A plant that has red flowers was crossed with a plant that has white flowers. All of the offspring produced pink flowers. In this plant:
the gene for red flowers is dominant.
the gene for white flowers is dominant.
neither gene for flower color is dominant.
a new gene for pink flower color probably formed in a mutation.
