Genetics
Flashcard
•
Biology
•
8th Grade
•
Practice Problem
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is an allele?
Back
An allele is a variant form of a gene that can produce different traits. For example, the gene for flower color in pea plants can have a purple allele or a white allele.
2.
FLASHCARD QUESTION
Front
What is a dominant allele?
Back
A dominant allele is an allele that expresses its trait even when only one copy is present in the genotype. For example, in pea plants, the purple flower color is dominant over white.
3.
FLASHCARD QUESTION
Front
What is a recessive allele?
Back
A recessive allele is an allele whose trait is only expressed when two copies are present in the genotype. For example, a plant with the genotype 'gg' will have yellow flowers.
4.
FLASHCARD QUESTION
Front
What is a genotype?
Back
A genotype is the genetic makeup of an organism, represented by the alleles it possesses. For example, 'GG', 'Gg', and 'gg' are different genotypes for flower color.
5.
FLASHCARD QUESTION
Front
What is a phenotype?
Back
A phenotype is the observable physical or biochemical characteristics of an organism, determined by its genotype. For example, a plant's flower color is part of its phenotype.
6.
FLASHCARD QUESTION
Front
What is the relationship between genotype and phenotype?
Back
The genotype determines the phenotype. The alleles present in the genotype influence the traits that are expressed in the phenotype.
7.
FLASHCARD QUESTION
Front
What is the purpose of a Punnett square?
Back
A Punnett square is a diagram used to predict the outcome of a genetic cross by showing the possible combinations of alleles from the parents.
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