Answer:
They have contributed same allele for straight hair.
Explanation:
There are two conditions homozygous and heterozygous. In homozygous conditions both the allele of a particular gene is same in an offspring which means the offspring got two same alleles from its parent for a particular gene and if an offspring is heterozygous for a gene that suggests that the parent has contributed two different alleles for that gene in the offspring.
So If Micah is homozygous for straight hair then it can be concluded that his parents have contributed two same alleles for straight hair genes.
 
        
             
        
        
        
<span>Both pine trees and ferns have the ability to make their own food via photosynthesis. They are both able to convert water and carbon dioxide into oxygen and sugars. Based on the concept of domains they are both classified under Eukaryota. </span>
        
             
        
        
        
A missense mutation is a mistake in the DNA which results in the wrong amino acid being incorporated into a protein because of change, that single DNA sequence change, results in a different amino acid codon which the ribosome recognizes.