Genetics
Flashcard
•
Biology
•
9th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a heterozygous genotype?
Back
A heterozygous genotype consists of two different alleles for a particular gene, such as Bb.
2.
FLASHCARD QUESTION
Front
What is the genotypic ratio in a monohybrid cross between two heterozygous plants?
Back
The genotypic ratio is 1:2:1.
3.
FLASHCARD QUESTION
Front
What does the term 'genotypic ratio' refer to?
Back
The genotypic ratio refers to the ratio of homozygous dominant, heterozygous, and homozygous recessive offspring in a genetic cross.
4.
FLASHCARD QUESTION
Front
What is a homozygous recessive genotype?
Back
A homozygous recessive genotype consists of two identical recessive alleles, such as bb.
5.
FLASHCARD QUESTION
Front
What is a recessive allele?
Back
A recessive allele is an allele whose trait only shows up when no dominant allele is present.
6.
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.
7.
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.
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