A child has type O blood. Which of the following couples could be the child's parents?

Couple 1: Mother's Type -A, Father's Type -B
Couple 2: Mother's Type -O, Father's Type -A
Couple 3: Mother's Type -AB, Father's Type -O
Couple 4: Mother's Type -B, Father's Type -AB

A.
couple 1, 2, 3, or 4

B.
couple 3 or 4 only

C.
couple 1 or 2 only

D.
couple 2, 3, or 4 only

Agene with the original sequence of atgtt—tact underwent substitution mutation to form atatt—tact after a few generations. tact is a part of a muscle protein encoding region, and atgtt codes for a digestive enzyme. what will be the effect of this mutation? a. the production of muscle protein will be affected. b. the production of digestive enzymes will be affected. c. the production of both the protein and the enzyme will be affected. d. the production of neither the protein nor the enzyme will be affected.

What in scientific term why the salty popcorn causes this thirst

When listening the levels of orginization in orginisims from the smallest to most complex , which level is just below organs in complexity