Two characteristics used to define mammals include a. mammary glands and scales. b. mammary glands and hair or fur. c. mammary glands and sweat glands. d. sweat glands and a four-chamber heart.
The primary building blocks of a DNA molecule are (A) nitrogenous bases, phosphates, and ribose sugar. (B) nitrogenous bases, phosphates, and deoxyribose sugar. (C) phosphorous bases, nitrogen, and ribose sugar. (D) phosphorous bases, nitrogen, and deoxyribose sugar. (E) carbon, nitrogen, oxygen, phosphorous, and deoxyribose sugar.
in rabbits, black fur is dominant over white fur. Show the cross of a heterozygous black male with a homozygous white female.
Which of the objects is living or nonliving: Bacteria, virus, moss, you, a lemon seed, the air, bread, lettuce and rocks?
