How are birds and reptiles similar?
a. they both have scales and lay eggs.
b. they both have scales and have babies born alive.
c. they both have scales and migrate.
d. they both have scales and hibernate.

Select the correct answer. tay-sachs disease is caused by a mutation in the hexa gene located on chromosome 15. tay-sachs follows an autosomal recessive pattern of inheritance. with the of the diagram, identify which of the offspring will be an unaffected carrier. a diagram showing the genes of parents who are carriers of tay-sachs disease a. a, b, and c b. b and c c. a and d d. a e. d