Examination of the penis, testicles, vagina, and mammary glands is performed during the of the systematic examination. a. integumentary   b. gastrointestinal   c. nervous   d. urogenital

The correct answer for the fill in the blank is- D) Urogenital.

Urinogenital system is the organ system that comprises of reproductive system and the urinary system. They are grouped together under this system due to their close proximity.

Penis and testicles are the reproductive organs in the male reproductive system whereas vagina and mammary glands are included in the female reproductive system.

Thus, option D) is the right answer.

the diploid number of chromosomes is sometimes represented by the symbol 2n. for the fruit fly, the diploid number is 8, which can be written as 2n = 8, where n represents twice the number of chromosomes in a sperm or egg cell.