Heredity Flashcard Study Guide 2025
Flashcard
•
Science
•
8th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is an observable trait?
Back
An observable trait is a characteristic that can be seen or measured, such as flower color or height.
2.
FLASHCARD QUESTION
Front
What are segments of DNA on a chromosome that code for a specific trait called?
Back
Genes.
3.
FLASHCARD QUESTION
Front
In genetics, what does the term 'allele' refer to?
Back
An allele is a variant form of a gene that can result in different traits.
4.
FLASHCARD QUESTION
Front
What is the difference between dominant and recessive alleles?
Back
A dominant allele expresses its trait even if only one copy is present, while a recessive allele only expresses its trait if two copies are present.
5.
FLASHCARD QUESTION
Front
If a heterozygous red-flowered shrub (Rr) is crossed with a white-flowered shrub (rr), what is the probability of getting white-flowered offspring?
Back
50%.
6.
FLASHCARD QUESTION
Front
What does a Punnett square illustrate?
Back
A Punnett square is a diagram used to predict the genetic outcomes of a cross between two organisms.
7.
FLASHCARD QUESTION
Front
What is the genotype of a plant that is homozygous for tallness?
Back
TT.
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