One cause of may be deforestation.

Guinea pig coat color is determined by a single gene. the allele for black coat color is dominant to brown. in a cross between twoblack-haired guinea pigs, 20 offspring are born. if both parents were heterozygous, probability would predict that approximately howmany of the 20 offspring would have brown hair?

Por qué crees que los huevos con cáscara se llaman amnióticos?

Many birth-control pills release a constant amount of synthetic estradiols and progesterone for 21 days. true or false