WorksheetsGenetics Vocab Quiz
Total questions: 15
Worksheet time: 8mins
What term describes an organism that has 2 different alleles for a trait?
Dominant
Heterozygous
Homozygous
Recessive
What term describes an allele whose trait always shows up in the organism when the allele is present?
Dominant
Heterozygous
Homozygous
Recessive
What term describes an allele that is masked when the dominant allele is present?
Dominant
Heterozygous
Homozygous
Recessive
What term an organism that has 2 of the same alleles for a trait?
Dominant
Heterozygous
Homozygous
Recessive
In the picture, what letter represents the dominant allele?
B
b
In the picture, what letter represents the recessive allele?
B
b
In the picture, what letter combination is heterozygous?
BB
bb
Bb
In the picture, what letter combination is homozygous? (Select ALL that apply.)
BB
bb
Bb
Which of the following situations BEST demonstrates codominance?
A person with an allele for blue eyes and an allele for brown eyes has brown eyes.
A flower with an allele for red petals and an allele for white petals has pink petals.
A cow with an allele for white fur and an allele for brown fur has roan fur (white fur with large brown patches).
A dog with two alleles for floppy ears has floppy ears.
What term describes a different form of a gene?
Allele
Codominance
Gene
Genotype
Phenotype
What term describes a condition in which two different alleles for a gene are both expressed to an equal degree in an individual?
Allele
Codominance
Gene
Genotype
Phenotype
What term describes a segment of DNA that codes for a specific trait?
Allele
Codominance
Gene
Genotype
Phenotype
What term describes an organism's genetic makeup or allele combinations?
Allele
Codominance
Gene
Genotype
Phenotype
What term describes an organism's physical appearance or visible trait?
Allele
Codominance
Gene
Genotype
Phenotype
Which of the following statements correctly identifies the phenotype and the genotype in this picture?
Brown eyes is the genotype, and Bb is the phenotype.
Bb is the genotype, and brown eyes is the phenotype.
