Genetics
Flashcard
•
Biology
•
9th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the genotypic ratio in a monohybrid cross?
Back
The genotypic ratio is the ratio of homozygous dominant, heterozygous, and homozygous recessive offspring. For a monohybrid cross of two heterozygous parents (Bb x Bb), the genotypic ratio is 1:2:1.
2.
FLASHCARD QUESTION
Front
What is the phenotypic ratio in a monohybrid cross of two heterozygous plants?
Back
The phenotypic ratio is the ratio of different observable traits. In a monohybrid cross of two heterozygous plants (Tt x Tt), the phenotypic ratio is 3:1 (3 tall: 1 short).
3.
FLASHCARD QUESTION
Front
Define homozygous dominant.
Back
Homozygous dominant refers to an organism that has two identical dominant alleles for a trait (e.g., BB).
4.
FLASHCARD QUESTION
Front
Define homozygous recessive.
Back
Homozygous recessive refers to an organism that has two identical recessive alleles for a trait (e.g., bb).
5.
FLASHCARD QUESTION
Front
Define heterozygous.
Back
Heterozygous refers to an organism that has two different alleles for a trait (e.g., Bb).
6.
FLASHCARD QUESTION
Front
What is a Punnett Square?
Back
A Punnett Square is a diagram used to predict the genotypes of offspring from a genetic cross.
7.
FLASHCARD QUESTION
Front
What is the probability of a blue-eyed baby from two brown-eyed parents (Bb)?
Back
The probability of a blue-eyed baby (bb) from two brown-eyed parents (Bb) is 25%.
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