Answer:
<em>B. Cell wall </em>
Explanation:
All the others are wrong, and this is the answer on Edgenuity :)
To find the similarities and differences in organisms by using possible chromosome and physical characteristics.
Adrenocorticotrophic hormone (ACTH)
Thyroid-stimulating hormone (TSH)
Luteinising hormone (LH)
Follicle-stimulating hormone (FSH)
Prolactin (PRL)
Growth hormone (GH)
Because they studied a lot about dna and rna and figured that rna was the first coding system of lofe
