Some genes are only present in only one copy in some organisms(continued?

Question

(only one allele is present rather than two). If there is only one allele, do you have to know whether it is a dominant or recessive allele in order to know whether it will be expressed? Discuss.

Answer 1

In the absence of any counterpart, the question of being dominant or recessive does not arise. The allele in question will be deemed to be dominant and will express itself.

Answer 2

Very simply: since there is only one allele, that allele will always be dominant. After all, it has no competition for dominance because it's the only gene available.

Answer 3

The concept of dominant or recessive does not apply to such; the genes will be expressed in any event. Example: the human X chromosome in a male. The color vision genes will express if they are present; if they aren't, the individual will have colorblindness.