What is a phenotype?
Heredity and Punnett Squares

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Science
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9th - 12th Grade
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Hard
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1.
FLASHCARD QUESTION
Front
Back
A phenotype is 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
A genotype is the genetic constitution of an individual, specifically the alleles present for a particular gene.
3.
FLASHCARD QUESTION
Front
What does homozygous mean?
Back
Homozygous refers to having two identical alleles for a particular gene, such as 'TT' or 'tt'.
4.
FLASHCARD QUESTION
Front
What does heterozygous mean?
Back
Heterozygous refers to having two different alleles for a particular gene, such as 'Tt'.
5.
FLASHCARD QUESTION
Front
What is the dominant allele?
Back
The dominant allele is the variant of a gene that is expressed in the phenotype even when only one copy is present.
6.
FLASHCARD QUESTION
Front
What is the recessive allele?
Back
The recessive allele is the variant of a gene that is only expressed in the phenotype when two copies are present.
7.
FLASHCARD QUESTION
Front
If 'G' represents green and 'g' represents yellow, what is the genotype for a green plant?
Back
The genotype for a green plant can be either 'GG' (homozygous dominant) or 'Gg' (heterozygous).
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