Dominant and Recessive Traits Flashcard

Flashcard
•
Science
•
7th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a dominant trait?
Back
A dominant trait is a genetic trait that is expressed in the phenotype even when only one copy of the allele is present.
2.
FLASHCARD QUESTION
Front
What is a recessive trait?
Back
A recessive trait is a genetic trait that is only expressed in the phenotype when two copies of the allele are present.
3.
FLASHCARD QUESTION
Front
What does genotype refer to?
Back
Genotype refers to the genetic makeup of an organism, specifically the alleles it possesses.
4.
FLASHCARD QUESTION
Front
What does phenotype refer to?
Back
Phenotype refers to the physical appearance or visible traits of an organism.
5.
FLASHCARD QUESTION
Front
If a parent has genotype Bb, what alleles can they pass on to their offspring?
Back
They can pass on either the dominant B allele or the recessive b allele.
6.
FLASHCARD QUESTION
Front
What is the probability of obtaining a recessive phenotype from a cross of Tt x Tt?
Back
25% probability of obtaining a recessive phenotype.
7.
FLASHCARD QUESTION
Front
In a genetic cross, what does a Punnett square represent?
Back
A Punnett square is a diagram used to predict the genotypes of offspring from a genetic cross.
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