What is the genetic makeup of an organism called?
Dihybrid Crosses

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Science
•
7th - 10th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
Genotype
2.
FLASHCARD QUESTION
Front
What is the term for the physical expression of traits in an organism?
Back
Phenotype
3.
FLASHCARD QUESTION
Front
In a dihybrid cross, how many traits are being examined?
Back
Two traits are crossed.
4.
FLASHCARD QUESTION
Front
What does it mean if an organism is homozygous?
Back
It has two identical alleles for a trait.
5.
FLASHCARD QUESTION
Front
What is the term for an organism that has two different alleles for a trait?
Back
Heterozygous
6.
FLASHCARD QUESTION
Front
What is the expected phenotypic ratio in a typical dihybrid cross?
Back
9:3:3:1
7.
FLASHCARD QUESTION
Front
What is the purpose of a Punnett square in genetics?
Back
To predict the genotypes and phenotypes of offspring from genetic crosses.
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