The bulbis glandis causes the "tie" after copulation. It occurs in A) horses cattle C) cats dogs

Why do females have Barr bodies?

The process by which haploid cells are produced from diploid cells is called A( sexual reproduction. B) meiosis C) gameoto reduction D) mitosis

Meiosis II of spermatogenesis yields a) Primary spermatocyces c) Spermatogonia d) Spežmatids 田 e) spermatozoa

Spermatogenesis and oogenesis both involve meiosis but differ in significant ways. One of those differences include what? A) Cytokinesis is unequal in spermatogenesis B) Production of sperm is continuous; in humans, and the number of future egg cells is set at birth C) Oogenesis is an uninterrupted sequence, but there are long delays in spermatogenesis D) All of the above

Explain the term anisogamous.

Plant breeders use colchicine to A) prevents cytokinesis in somatic cells B) increase the occurrence of unequal crossing over events during meosis C) stop the segregation of homologous chromosomes during meiosis D)  triggers the production of haploid gametes and diploid organism

What is the formula for a female with cri-du-chat syndrome?

Why is the ovum so much bigger than a sperm cell? 1)It already contains all the chromosomes that will determine the zygote's traits. 2)It must store enough food for the growth of the zygote into an embryo. 3)Its big size allows the sperm to locate it better inside the oviduct. 4)A big ega is easier to implant in the uterus after tertilization.

Fertilization: a) Briefly describe the process of fertilization in humans, b) identifying key aspects that stop sperms from different species to fertilize human oocytes, and c) identifying also key aspects that prevent polyspermy.