Multiple Choice
In the context of the fundamentals of genetics, what part of DNA contains the information that codes for traits by specifying proteins or functional RNA products?
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1. Introduction to Genetics
Fundamentals of Genetics
Multiple Choice
In basic Mendelian genetics, what genotype represents a homozygous dominant individual for a gene with alleles A and a?
A
A
B
AA
C
Aa
D
aa
Verified step by step guidance1
Understand that in Mendelian genetics, each gene has two alleles, one inherited from each parent. For a gene with alleles A (dominant) and a (recessive), the genotype consists of two letters representing these alleles.
Recall that 'homozygous' means having two identical alleles for a particular gene. Therefore, a homozygous individual will have either two dominant alleles or two recessive alleles.
Identify that 'homozygous dominant' specifically refers to having two copies of the dominant allele, which is represented by 'A'.
Write the genotype for a homozygous dominant individual as two capital letters: \(AA\).
Contrast this with heterozygous (\(Aa\)) and homozygous recessive (\(aa\)) genotypes to reinforce the concept.
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