Question

Choose the odd one w.r.t. occurrence of menstrual cycle.
Dogs


Monkeys


Apes


Humans

Answer 1

Dogs

Explanation:

It's odd one w.r.t. occurrence of menstrual cycle.

Answer 2

Given:

Choose the odd one w.r.t. occurrence of the menstrual cycle.

Dogs, Monkeys, Apes, Humans

Answer:

Among the given options, the odd one is "Dogs".

Explanation:

• Dogs have the "Estrous Cycle" instead of the Menstrual Cycle.

• Monkeys, Apes, and Humans have the menstrual cycle.

• In the menstrual cycle, if the egg is not fertilized with the sperm then the egg(endometrium) breaks down and shed as menstrual flow via blood.

• In the Estrous Cycle, if the fertilization does not takes place then the egg(endometrium) is reabsorbed by the walls of the uterus.

• The estrous cycle in dogs depends on their breed. some breed dogs may have the estrous cycle thrice a year and some giant breed dogs have one estrous cycle per year.