What is a dihybrid cross?
Dihybrid Cross 10.2

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Biology
•
9th - 12th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
A dihybrid cross is a genetic cross that examines the inheritance of two different traits, each represented by two alleles.
2.
FLASHCARD QUESTION
Front
What are the possible genotypes of the parents in a dihybrid cross?
Back
The possible genotypes can include combinations of homozygous and heterozygous alleles for both traits, such as YyRr, YYRR, etc.
3.
FLASHCARD QUESTION
Front
What is the phenotypic ratio expected from a dihybrid cross?
Back
The expected phenotypic ratio from a dihybrid cross is 9:3:3:1.
4.
FLASHCARD QUESTION
Front
What does homozygous mean?
Back
Homozygous refers to having two identical alleles for a particular gene, either dominant or recessive.
5.
FLASHCARD QUESTION
Front
What does heterozygous mean?
Back
Heterozygous refers to having two different alleles for a particular gene.
6.
FLASHCARD QUESTION
Front
What is the significance of the Punnett square in genetics?
Back
The Punnett square is a tool used to predict the genotypes and phenotypes of offspring from a genetic cross.
7.
FLASHCARD QUESTION
Front
How many different gametes can be produced by a dihybrid organism with genotype YyRr?
Back
A dihybrid organism with genotype YyRr can produce four different gametes: YR, Yr, yR, and yr.
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