Genetics
Flashcard
•
Biology
•
9th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What does genotype refer to?
Back
The possible combination of alleles in a gene.
2.
FLASHCARD QUESTION
Front
Which of the following is heterozygous?
Back
Bb
3.
FLASHCARD QUESTION
Front
In a Punnett Square, if tall is dominant to short, what is the genotypic ratio when crossing two heterozygous plants?
Back
1:2:1
4.
FLASHCARD QUESTION
Front
What is a phenotype?
Back
The physical expression of a trait, such as blue eyes.
5.
FLASHCARD QUESTION
Front
When two heterozygous tall pea plants (Tt) are crossed, what describes their offspring?
Back
75% tall and 25% short.
6.
FLASHCARD QUESTION
Front
What is the definition of an allele?
Back
An allele is a variant form of a gene.
7.
FLASHCARD QUESTION
Front
What is the difference between dominant and recessive alleles?
Back
A dominant allele masks the effect of a recessive allele in a heterozygous genotype.
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