Examples: The gene for seed shape in pea plants exists in two forms, one form or allele for round seed shape (R) and the other for wrinkled seed shape (r). A true-breeding round seed plant would be (RR) for that trait and a true-breeding wrinkled seed plant would be (rr).
The integumentary system consists of the skin, hair, nails, the subcutaneous tissue below the skin,and assorted glands.The most obvious function of the integumentary system is the protection that the skin gives to underlying tissues. The skin not only keeps most harmful substances out, but also prevents the loss of fluids.
Confidence votes 84.9K. The 11 major organ systems and their main functions are: 1)The integumentary system supports and protects, regulates body temperature, makes chemicals and hormones, and acts as a sense organ. 2)The skeletal system supports and protects, makes movement easier (with joints and muscles), stores minerals and makes blood cells in the marrow.