Question Detail
Question
The mammary ridges in mammals are:
Correct Answer
Option B is the correct answer.
Detailed Explanation
Mammary ridges (milk lines) develop in both male and female mammalian embryos. In males, the mammary glands typically remain rudimentary and non-functional due to hormonal differences, but the developmental structures are present.
Hint
These embryonic structures develop in all mammals regardless of sex.