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Biology Genetics Test Review

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Biology Genetics Test Review 1. What is a genotype? - Answer: The genotype refers to the specific genetic composition of an organism. 2. How is phenotype defined? - Answer: Phenotype describes the observable characteristics or traits of an organism. 3. What does allele mean? - Answer: A...

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  • August 3, 2024
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Biology Genetics Test Review


1. What is a genotype?

- Answer: The genotype refers to the specific genetic composition of an organism.



2. How is phenotype defined?

- Answer: Phenotype describes the observable characteristics or traits of an organism.



3. What does allele mean?

- Answer: An allele is a variant form of a gene found within the DNA.



4. What are genes?

- Answer: Genes serve as the fundamental units of hereditary information in DNA.



5. What does it mean to be homozygous?

- Answer: An individual is considered homozygous when they have identical alleles for a particular
gene.



6. What is heterozygous?

- Answer: Heterozygous refers to having two different alleles for a specific trait.



7. What characterizes a dominant trait?

- Answer: Dominant traits will always be expressed in the phenotype whenever they are part of the
genotype.



8. How is a recessive trait characterized?

- Answer: Recessive traits will appear in the phenotype only when no dominant traits are present in
the genotype.

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