Question

In Neurospora, both recessive and dominant alleles express their effect because.

• A. Two genes control each character
• B. There are two alleles for each character
• C. The organism contains only one allele for a gene
• D. Each gene has only one allele

Answer 1

Answer: (C)

The organism contains only one allele for a gene

Neurospora species are all haploids, spending most of their life cycles in the haploid state. Haploids are able to express both recessive and dominant alleles/ mutations because there is only one allele for each gene in the individual. Hybrid is an organism containing two different alleles or individual containing both dominant and recessive genes of an allelic pair.

So, the correct answer is 'The organism contains only one allele for a gene'.