Biology for IGCSE & O level - Inheritance (Section 8 - No. 28)
Which of the following are true about genes?
Genes are located on chromosomes.
Each gene has only one allele.
Genes determine the phenotype of the organism.
Genes are made of DNA.
Explanation
Genes are located on chromosomes, made up of DNA, and determine the phenotype. Each gene can have multiple alleles.
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