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In Mendelian genetics, what does a homozygous genotype mean?
In Mendelian genetics, what does a homozygous genotype mean?
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Practice Questions
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Q1
In Mendelian genetics, what does a homozygous genotype mean?
Two different alleles for a trait
Two identical alleles for a trait
One dominant and one recessive allele
A trait that is not expressed
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A homozygous genotype consists of two identical alleles for a specific trait, either dominant or recessive.
Questions & Step-by-step Solutions
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Q
Q: In Mendelian genetics, what does a homozygous genotype mean?
Solution:
A homozygous genotype consists of two identical alleles for a specific trait, either dominant or recessive.
Steps: 6
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Step 1: Understand that genes come in different forms called alleles.
Step 2: Recognize that alleles can be dominant or recessive.
Step 3: Know that a genotype is the combination of alleles an organism has for a specific trait.
Step 4: Learn that a homozygous genotype means both alleles are the same.
Step 5: Identify that this can be either two dominant alleles (e.g., AA) or two recessive alleles (e.g., aa).
Step 6: Conclude that homozygous means the organism has identical alleles for that trait.
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