What does the nucleic acid copies dna so what can be made ?

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

Match the following items 1. rr 2. rr 3. identical alleles 4. unlike alleles 5. rr ()homozygous, recessive ()homozygous definition ()heterozygous, dominant cell ()heterozygous definition () homozygous, dominant cell

Can a trait be both polygenic and have multiple alleles? explain why or why not.