What is a phenotype?
Genetics Review

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Science
•
10th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
The observable physical or biochemical characteristics of an organism, as determined by both genetic makeup and environmental influences.
2.
FLASHCARD QUESTION
Front
What is a genotype?
Back
The genetic constitution of an individual, specifically the alleles present for a particular gene.
3.
FLASHCARD QUESTION
Front
What does homozygous mean?
Back
Having two identical alleles for a particular gene (e.g., AA or aa).
4.
FLASHCARD QUESTION
Front
What does heterozygous mean?
Back
Having two different alleles for a particular gene (e.g., Aa).
5.
FLASHCARD QUESTION
Front
What is the difference between dominant and recessive traits?
Back
Dominant traits are expressed in the phenotype even when only one allele is present, while recessive traits are only expressed when two copies of the allele are present.
6.
FLASHCARD QUESTION
Front
What is incomplete dominance?
Back
A genetic situation in which one allele does not completely dominate another allele, resulting in a phenotype that is a blend of the two.
7.
FLASHCARD QUESTION
Front
What is codominance?
Back
A genetic scenario where both alleles in a heterozygote are fully expressed, resulting in offspring with a phenotype that shows both traits.
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