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Questions and Answers
What term describes two identical alleles for a specific trait?
What term describes two identical alleles for a specific trait?
- Heterozygous
- Phenotype
- Allele
- Homozygous (correct)
Which of the following terms refers to the physical expression of a trait?
Which of the following terms refers to the physical expression of a trait?
- Heterozygous
- Allele
- Phenotype (correct)
- Genotype
In genetics, what does the term 'allele' specifically refer to?
In genetics, what does the term 'allele' specifically refer to?
- A physical characteristic of an organism
- Different forms of a gene (correct)
- The total genetic structure of an organism
- The combination of traits expressed by an organism
What genotype would indicate an organism is heterozygous for a trait?
What genotype would indicate an organism is heterozygous for a trait?
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Which of the following best defines the term 'genotype'?
Which of the following best defines the term 'genotype'?
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Study Notes
Alleles
- Alleles are alternative forms of a gene.
- Dominant and recessive alleles are two types of alleles.
Phenotype
- Phenotype refers to the observable characteristics of an organism.
- This includes physical appearance, such as color.
Genotype
- Genotype represents the complete genetic makeup of an organism.
- It also describes the specific combination of genes for one or more traits.
- Genotypes are often represented using letter combinations.
Heterozygous
- Heterozygous refers to having one copy of each allele for a specific trait.
- An example of a heterozygous genotype is Pp.
Homozygous
- Homozygous describes having two identical alleles for a specific trait.
- This can either be two dominant alleles (PP) or two recessive alleles (pp).
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