Answer :a. the polygenic nature of sickle-cell disease
Explanation:
<u>SS is a genetic disorder in which more than two genes control a single character</u>. Contrary to single gene to a trait. It exhibit an abnormal clinical heterogeneous traits for Mendel inheritance with multiple factors exerting influence on an individual disease outcome. Therefore multiple complications arises with symptoms
Chlorophyll, which gives plants their green color, enables plants to turn sunlight, CO2, water, and a few minerals into new plant tissue through a process called photosynthesis<span>.</span>
<span>It is correct to say that
sensory neurons carry information from sense to spinal cord. These sensory
neurons then connect to relay neurons that carry the information to the Central
Nervous system (CNS). The CNS then sends a signal to the motor neuron that prompts
a reflux action for Mary to quickly pul her hand out. </span>
