HELP!! Identical twins are born with black hair. They grow up in different homes. They meet at their 30 year birthday party. Why does one have gray hair?

Four types of motile cells in human body?

Number and variety of living organisms includes genetic, species, and ecological types

Use the above pedigree for questions 1,2, and 3 1. what kind of genetic disorder is represented in the pedigree? a. recessive b. dominate refer to the pedigree in question 1. 2. is the mutated gene in this disorder located on a sex chromosome (x or y) or an autosome? a. sex chromosome b. autosome refer to the pedigree in question 1. 3. which generation has individuals that you are certain are heterozygous for the mutated gene? a. generation 1 b. generation 2 c. generation 3