La demencia senil es una enfermedad que suele ocurrir a partir de los 60 años. Por lo tanto, el ENVEJECIMIENTO supone uno de los factores de riesgo más significativos. Está causada por el daño o la pérdida de las células nerviosas y sus conexiones en el cerebro. Teniendo en cuenta esta descripción, cuál será el factor principal que condiciona a una persona para tener dicha enfermedad

Afamily has a y-linked disease that affects the father. what is the chance of a male offspring inheriting the same disease? oa. 100% ob. 50% oc. 25% d. 0%

Students in biology are studying the macromolecules of life. they used a calorimeter to determine the calories in various types of food. once the lab was completed, the students ate the left over food samples. monica commented that in just 6 or 7 "chews" of the saltine, it was gone; nothing but a sticky paste in her mouth. elaborate on what happened chemically while chewing the saltine. include the macromolecules present.

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?