What is DNA?
Punnett Squares

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Science
•
5th - 8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
DNA is the molecule that carries the genetic instructions for life, serving as the blueprint for traits of all living things.
2.
FLASHCARD QUESTION
Front
What does a Punnett Square show?
Back
A Punnett Square is a diagram used to predict the outcome of a genetic cross by showing the possible combinations of alleles from the parents.
3.
FLASHCARD QUESTION
Front
What is a dominant allele?
Back
A dominant allele is a version of a gene that is expressed in the phenotype even when only one copy is present. It is represented by a capital letter.
4.
FLASHCARD QUESTION
Front
What is a recessive allele?
Back
A recessive allele is a version of a gene that is only expressed in the phenotype when two copies are present. It is represented by a lowercase letter.
5.
FLASHCARD QUESTION
Front
If a tall plant (TT) is crossed with a short plant (tt), what will the offspring be?
Back
All of the offspring will be tall.
6.
FLASHCARD QUESTION
Front
What is the probability of getting a tall plant from a Tt x Tt cross?
Back
The probability of getting a tall plant is 75%.
7.
FLASHCARD QUESTION
Front
What does it mean if an organism is homozygous?
Back
An organism is homozygous if it has two identical alleles for a trait, such as TT or tt.
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