Tag Info

New answers tagged

-1

It sounds there are two different questions implicit in what you are asking. First, does dolphin communication amount to language? Second, do different groups of dolphins within a given species have different communication dialects? The first question is really one for the philosophers so I'm not going to address it. As to the second question, there is ...


3

This is a common misunderstanding from newcomers in evolutionary biology. Not every trait is the result of an adaptation. Evolution is way more than just natural selection and is not as deterministic as you may think. There is stochasticity inherent to mutational processes and there is stochasticity in reproductive success (called genetic drift). This ...


1

It comes down to investment in offspring. Males invest little in offspring only a little sperm whilst females have to develop the more expensive egg and the energy used through its development. In the mammalian line, this investment has increased in amount, initially through viviparity and then through the secretion of feeding fluids. In species, such as ...


-1

The mammary glands in human males is not vestigial but rudimentary. Human females have XX chromosomes and males have XY chromosome,here the "Y" chromosome is provided by father and "X" by the mother. At the time of fertilization, the father can provide either X or Y chromosome. If he provides Y chromosome the child will be male and if he provides X then ...



Top 50 recent answers are included