Answer: Definition of reproductive system. : the system of organs and parts which function in reproduction consisting in the male especially of the testes, penis, seminal vesicles, prostate, and urethra and in the female especially of the ovaries, fallopian tubes, uterus, vagina, and vulva.
Explanation:
One group of reptiles, characterized by the fossil Archaeopteryx, led to the evolution of birds. The correct answer is birds
D is the answer. A gene is a part of a chromosome.
