What is a mutagen? pls

The probability of producing a normal child by two parents who are carriers for an autosomal recessive disorder is

If the rna molecule in a human has the nucleotide sequence of guu, this would the amino acid valine would be needed to make the protein. how would this cha process was occurring in a mushroom?

_is a product of the first stage of photosynthesis.atpglucosecarbon dioxidewater