Genetics
Flashcard
•
Biology
•
9th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a Punnett Square?
Back
A Punnett Square is a diagram used to predict the genotypes of a particular cross or breeding experiment. It shows the possible combinations of alleles from the parents.
2.
FLASHCARD QUESTION
Front
What does it mean for a trait to be dominant?
Back
A dominant trait is one that will appear in the phenotype even if only one allele is present. It masks the effect of a recessive allele.
3.
FLASHCARD QUESTION
Front
What is a genotype?
Back
A genotype is the genetic makeup of an organism, specifically the alleles it possesses for a particular trait.
4.
FLASHCARD QUESTION
Front
What is a phenotype?
Back
A phenotype is the observable physical or biochemical characteristics of an organism, determined by both genetic makeup and environmental influences.
5.
FLASHCARD QUESTION
Front
What is the genotypic ratio from a cross of two heterozygous plants (Tt x Tt)?
Back
1:2:1 (1 TT : 2 Tt : 1 tt)
6.
FLASHCARD QUESTION
Front
What is the phenotypic ratio from a cross of two heterozygous plants (Tt x Tt)?
Back
3:1 (3 tall : 1 short)
7.
FLASHCARD QUESTION
Front
How many alleles does an offspring receive from each parent?
Back
One allele from each parent, for a total of two alleles for each trait.
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