<span>I think the answer is A test cross can be used to: study how traits are inherited. </span>
Thomas Hunt Morgan, who studied fruit flies, provided the first strong confirmation of the chromosome theory. Morgan discovered a mutation that affected fly eye color. ... Based on the inheritance pattern, Morgan concluded that the eye color gene must be located on the X chromosome.
Answer:
A plastic bag because the others would ruin the evidence the cotton would absorb the blood same with the envelope , paper bag.
Explanation:
The ER comes in two different morphological forms: smooth ER and rough ER
