What is the definition of a dominant trait in genetics?
Genetics Benchmark Review

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Science
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9th - 12th Grade
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Hard
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1.
FLASHCARD QUESTION
Front
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 does homozygous mean?
Back
Homozygous refers to having two identical alleles for a particular gene, such as AA or aa.
3.
FLASHCARD QUESTION
Front
What is the definition of 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.
4.
FLASHCARD QUESTION
Front
What is a Punnett Square used for?
Back
A Punnett Square is a diagram used to predict the outcome of a genetic cross by showing the possible combinations of alleles.
5.
FLASHCARD QUESTION
Front
What does the genotype XH Xh represent?
Back
The genotype XH Xh represents a carrier female for an X-linked recessive disorder.
6.
FLASHCARD QUESTION
Front
What is the mode of inheritance for traits that appear in every generation?
Back
The mode of inheritance is dominant, as the trait shows up in every generation.
7.
FLASHCARD QUESTION
Front
What is the probability of an offspring being purple if both parents are homozygous dominant (PP)?
Back
100% probability of being purple.
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