Genetics Test
Flashcard
•
Biology
•
11th Grade
•
Practice Problem
•
Medium
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15 questions
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1.
FLASHCARD QUESTION
Front
What does homozygous mean in genetics?
Back
Homozygous refers to having two identical alleles for a particular gene, such as GG or gg.
2.
FLASHCARD QUESTION
Front
What is the difference between dominant and recessive traits?
Back
Dominant traits are expressed when at least one dominant allele is present, while recessive traits are only expressed when two recessive alleles are present.
3.
FLASHCARD QUESTION
Front
What is the genotype of an individual with brown eyes if blue is recessive?
Back
The genotype could be either homozygous dominant (BB) or heterozygous (Bb) for brown eyes.
4.
FLASHCARD QUESTION
Front
What is a purebred organism?
Back
A purebred organism has identical alleles for a specific trait, meaning it is homozygous.
5.
FLASHCARD QUESTION
Front
What is a beneficial mutation?
Back
A beneficial mutation is a genetic change that enhances an organism's fitness or survival in its environment.
6.
FLASHCARD QUESTION
Front
What is the phenotype of an organism?
Back
The phenotype is the observable physical or biochemical characteristics of an organism, determined by its genotype.
7.
FLASHCARD QUESTION
Front
What does it mean if a trait is recessive?
Back
A recessive trait is one that is masked by a dominant trait and only expressed when two recessive alleles are present.
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