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WorksheetsGenetics and Heredity
Total questions: 15
Worksheet time: 4mins
Genetics
Factors that control traits
Having two identical alleles for a trait
The science of how traits are passed down from parent to offspring
The physical appearance or visible traits
Hybrid
An organism that has two different alleles for a trait
A trait that is hidden when the dominant allele is present
A physical characteristic
Number that describes how likely it is that an event will occur
What is the probability that two heterozygous pea plants have a homozygous dominant pea plant offspring?
0%
25%
75%
100%
Genes
Chart that shows all the possible combinations of alleles that can result from a genetic cross
The science of how traits are passed down from parent to offspring
Recessive allele
Factors that control traits
What is the probability of a tall (dominant) pea plant and a short pea plant having a short pea plant?
100%
0%
25%
50%
Heredity
The passing of traits from parent to offspring
The science of how traits are passed from parent to offspring
Genes
Purebred
Dominant allele
A trait that will always show up if the allele is present
A trait that is hidden when a dominant trait is present
A physical characteristic
The genetic makeup or combination of alleles
Hybrid
The offspring of many generations that has the same traits and alleles
Different forms of a gene
Number that describes how likely it is that an event will occur
An organism that has two different alleles for a trait
If a heterozygous brown-haired dog crosses with a homozygous brown-haired dog, what are all the possible genotypes for their offspring?
Bb, Bb, bb, bb
BB, BB, BB, BB
BB, BB, Bb, Bb
bb, bb, BB, BB
Homozygous
The offspring of many generations that has the same traits and alleles
Factors that control traits
The physical appearance or visible traits
Having two identical alleles for a trait
If a heterozygous white-haired rabbit crosses with a brown rabbit, what percentage of their offspring will have brown fur, and what percentage will have white fur?
25% white fur, 75% brown fur
0% white fur, 100% brown fur
50% white fur, 50% brown fur
75% white fur, 25% brown fur
Trait
The physical appearance or visible traits
A physical characteristic
Different forms of a gene
A trait that is hidden if the dominant allele is present
If a homozygous long-tailed (dominant) rat mates with a short-tailed rat, what percentage of their offspring will have a short tail?
100%
25%
75%
0%
Punnett square
The physical appearance or visible traits
The genetic makeup or combination of alleles
A chart that shows all the possible combinations of alleles that can result from a genetic cross
Different forms of a gene
If two heterozygous black-haired dogs mate, what are all the possible genotypes of their offspring?
HH, HH, HH, HH
HH, Hh, Hh, hh
Hh, hh, hh, hh
hh, HH, HH, Hh
