Monohybrid and Dihybrid Crosses

Flashcard
•
Science
•
9th - 12th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a monohybrid cross?
Back
A genetic cross that involves one trait, such as pod shape.
2.
FLASHCARD QUESTION
Front
What are alleles?
Back
Different versions of a gene.
3.
FLASHCARD QUESTION
Front
What are the possible genotypes for a monohybrid cross of Tt x Tt?
Back
TT=25%, Tt=50%, tt=25%.
4.
FLASHCARD QUESTION
Front
What does the Law of Dominance state?
Back
A recessive allele is only expressed when a dominant allele is not present.
5.
FLASHCARD QUESTION
Front
What does heterozygous mean?
Back
Having two different alleles for a trait, such as Tt.
6.
FLASHCARD QUESTION
Front
What is a dihybrid cross?
Back
A genetic cross that involves two traits, such as seed shape and seed color.
7.
FLASHCARD QUESTION
Front
What is the phenotype ratio for a dihybrid cross of RrYy x RrYy?
Back
9:3:3:1.
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