Genetics and Traits Overview
Flashcard
•
Science
•
8th Grade
•
Practice Problem
•
Hard
Standards-aligned
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the definition of genetics?
Back
Genetics is the scientific study of heredity and the variation of inherited characteristics.
Tags
NGSS.HS-LS1-1
NGSS.HS-LS3-1
NGSS.HS-LS3-2
2.
FLASHCARD QUESTION
Front
What does it mean for a trait to be dominant?
Back
A dominant trait is one that masks the presence of another trait, meaning it will be expressed in the phenotype even if only one copy of the allele is present.
3.
FLASHCARD QUESTION
Front
What is a homozygous dominant genotype?
Back
A homozygous dominant genotype consists of two identical dominant alleles, represented as 'BB'.
Tags
NGSS.HS-LS3-2
4.
FLASHCARD QUESTION
Front
What is a heterozygous genotype?
Back
A heterozygous genotype consists of one dominant and one recessive allele, represented as 'Bb'.
Tags
NGSS.HS-LS1-1
5.
FLASHCARD QUESTION
Front
What is the genotype ratio of a cross between a homozygous dominant (BB) and a heterozygous (Bb) parent?
Back
The genotype ratio is 2 BB : 2 Bb, or simplified, 1 BB : 1 Bb.
6.
FLASHCARD QUESTION
Front
What is incomplete dominance?
Back
Incomplete dominance is a situation in which one allele is not completely dominant over another, resulting in a blended phenotype.
7.
FLASHCARD QUESTION
Front
What is codominance?
Back
Codominance occurs when both alleles in a heterozygous genotype are fully expressed, resulting in offspring with a phenotype that shows both traits.
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