mary is a green-eyed mother who is married to brown-eyed Jackson, and they have four children. Brown is the dominant allele, and green is the recessive allele. Three of their four children have brown eyes, and one has green eyes. How can you explain this?

Explanation:

If you draw a punnet square with the recessive and dominant allele's you'll see that there is a 25% chance even when both parents have brown eyes. Have a nice day! :)

osteogenesis imperfecta (oi) refers to a congenital ailment of bones. in the condition, the bones become brittle or fragile. this ailment is a general result of the defect or mutations in the genes (colia1 or colia2). this mutation results in imperfect collagen formation either in quantity or quality wise.  

there are eight kinds of oi defects, and each kind varies with certain distinctions in symptoms. the usual symptoms include frequent bone fractures, loss of hearing in infants, protruding eyes, discoloration of the white in the eyes, respiratory issues, loosening of the joints, short stature, and other symptoms.