Answer: doctor may be able to determine the cause by listening to your medical history and doing a physical exam. If necessary, they also can order a blood or urine test to help confirm a diagnosis, or a "culture test" of tissue to identify bacteria or viruses.
Explanation:
It’s the letter C.................
Pleiotropy occurs when one gene influences multiple, seemingly unrelated phenotypic traits. A single gene is responsible for pigmentation and hearing.
Tissue(interstitial)fluid
A) Crossing over is the mechanism of genetic variation that results from the exchange of gene segments between non-sister chomatids.
