Unlike mammals, birds lay eggs and initial stages of development occur outside the mother’s body. Reproductive system of birds The gonads develop from two sources during embryonic development. When ...

In mammals, male and female reproductive structures are found in separate individuals. If an egg is fertilised by a sperm in the oviduct then it divides a number of times then implants into the ...

The biological factory that produces reproductive cells has a robust quality control system to identify and ... control mechanisms could operate in mammals, including humans.

have identified a neural circuit in the brain that governs sexual rejection in female mammals, providing key insights into the mechanisms shaping social and reproductive behaviors. The study ...

A groundbreaking study from Tel Aviv University, the first of its kind on mammals, has found that bats living in urban ...