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?

How are tumors cells different from normal cells

Why reason best illustrates why hershey and chase chose to use viruses in their experiment?

Consider the classification levels of a human. eukarya ,animalia ,chordata ,mammalia ,primates, hominidae ,homo ,sapiens .which is the most specific taxonomic level in the classification system above? a sapiens b homo c hominidae d primates