Which statement is scientifically based?
a).mutations rarely occur.
b).all mutations are harmful.
c).some mutations can be contagious, like infections.
d).mutations are not passed from parent to offspring.

The probability of producing a normal child by two parents who are carriers for an autosomal recessive disorder is

Ais a landform that is formed at the mouth of a river from the deposition of sediment carried by the river as the water flows.

Plz ! a scientist wants to produce a cow that makes a particular human protein in it’s milk the desired protein causes blood to clot and can be used to treat hemophilia (a blood clotting disorder). which of the following would be best for the scientist to use? a. genetic crosses. b. cloning. c. selective breeding. d. genetic engineering.