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Worksheets9th Grade Genetics Quiz
Total questions: 10
Worksheet time: 5mins
An organism that has two identical alleles for a trait designated by two uppercase letters
heterozygous
homozygous dominant
homozygous recessive
If a human has blue eyes, which is a recessive trait, what is the genotype for that trait?
two uppercase B's
B b
two lowercase b's
If a human is heterozygous for brown eyes, what is the genotype?
two uppercase B's
Bb
two lower case b's
The physical expression of a gene is _____
genes
alleles
genotype
phenotype
Who is the "father of genetics" ?
Oswald Avery
Gregor Mendel
Charles Darwin
Craig Venter
Genetics is the study of _____
ecosystems
life
inheritance
cells
Yellow peas are dominant to green peas. Referring to the Punnet Square, what is the phenotypic ratio?
2:2
3:1
1:2:1
4:0
Brown eyes are dominant to blue eyes. What is the genotypic ratio for the Punnet Square?
1:3
1:2:1
3:1
4:0
The allele combinations for a trait
alleles
genes
phenotype
genotype
If an individual is heterozygous for a trait, what phenotype will they show?
dominant
recessive
both
none
