What would cause a person to have two copies of the bent thumb allele (tt)? 1. A person whose mother or father had two copies of the bent thumb allele will always have two copies of the allele.
2.A person with two copies of “t” inherited one from their mother and one from their father.
3. A person born with one “t” mutation is more likely to develop a second “t” mutation during their lifetime.
4. A person with two copies must have duplicated the “t” allele through mitosis early in development. (They inherited one, then doubled it)

heat a spark and oxygen

the correct answer is option b

behavioral response need communication and thus co-ordination at several levels such as interaction among cells, organ system and the entire organism.

behavioral response produces both internal and environmental stimulus.

image result for how many calories of energy will 20 grams of carbohydrates provide in one gram provides 4 calories

consuming the right balance of protein, carbohydrates and fat can you maintain a healthy weight and optimize your energy levels. protein and carbohydrates both contain 4 calories per gram, while fat provides 9 calories per gram.

no i don't feel that humans have oversubscribed some medications