A brief period of fertility that corresponds to the time of ...

[evelyn o bentley]

A brief period of fertility that corresponds to the time of ovulation and is associated strongly with an animal's sexual receptivity is known as
 
  A) menstruation.
  B) the organizing effect.
  C) estradiol.
  D) estrus.

Question 2

The lack of which hormone may cause vaginal dryness and make coitus painful?
 
  A) Estrogen
  B) Progesterone
  C) Estradiol
  D) Luteinizing hormone

[nixon_s]

Answer to Question 1

D

Answer to Question 2

Saved me massive time.

[evelyn o bentley]

Thanks for the timely response, appreciate it

[connor417]

Gracias!