WorksheetsINHERITANCE
Total questions: 27
Worksheet time: 17mins
Which answer includes the dominant homozygous genotype?
AA
Aa
aa
Which answer contains the heterozygous genotype?
AA
aa
Aa
What is the definition of an allele?
An allele is a variety of a gene.
An allele is the genetic makeup of an organism
An allele is another word for a gene.
What does the law of segregation state?
Separate genes are passed independently from each other, from parent to offspring.
Every individual possesses two alleles for any particular trait and which allele a parent gives its offspring is completely random.
Just because an allele is dominant, doesn't mean it is inherited more often.
A recessive allele is expressed less than a dominant allele.
What is the definition of a genotype?
The genetic makeup of an organism
The physical traits of an organism.
When one allele is dominant and one allele is recessive.
When both alleles are dominant.
What is the definition of heterozygous?
When both alleles are dominant
When one allele is dominant and one is recessive.
When both alleles are recessive.
When one gene is dominant and one is recessive.
In guinea pigs, the allele for short hair (H) is dominant and the allele for long hair (h) is recessive. When a dominant homozygous male and a heterozygous female are bred together, what is the predicted phenotypic ratio for the offspring?
1:1 short hair to long hair
All have short hair
1:3 short hair to long hair
1:3 long hair to short hair
Sperms can have
Only X chromosome
Only Y chromosome
Either X or Y chromosome
Either XX or XY chromosomes
Ova (eggs) can have
Only X chromosome
Only Y chromosome
Either X or Y chromosome
Only XX chromosomes
What is the percentage of a woman having a male child?
25%
50%
75%
100%
A brown eyed man of genotype Bb marries a blue eyed woman. What is the chance that their third child is brown eyed?
25%
50%
75%
100%
Somatic cells have 46 chromosomes. A boy's somatic cells would have ______
46 identical chromosomes of identical length.
46 chromosomes of varying length.
22 pairs of different chromosomes, but each pair is of the same length; one X and one Y chromosome.
22 pairs of different chromosomes, but each pair is of the same length; and two X chromosomes.
A dominant trait expresses itself
only in homozygous genotypes
only in heterozygous genotypes
both in homozygous and heterozygous genotypes
A recessive trait expresses itself
only in homozygous genotypes
only in heterozygous genotypes
in both homozygous and heterozygous genotypes
Each organism has 2 alleles for a particular trait. Where do these two alleles come from?
One from each parent
Both from one parent
Alleles do not come from parents
The kidney
