Embryology 1 - BDS

Which of the following is not true about mitosis?

• Equating

• 2 daughter cells

• Identical daughter cells

• No DNA replication

Answer explanation

There is always DNA replication before mitosis. It is absent in Meiosis 2

Crossing over or exchange of genetic material is seen in which stage of prophase - 1 ?

• Leptotene

• Zygotene

• Pachytene

• Diplotene

Passage of sperms towards tubal ampulla around ovulation time is not helped by which of the following?

• Muscular contraction of uterus

• Prostaglandins

• Thick, copious cervical mucus

• Sperm motility

Answer explanation

Thin cervical mucus at ovulation is needed for passage of sperm through cervix

Final conditioning and maturation of sperm in female reproductive tract is known as _________________ (type your answer in small letters only)

What is true about site of implantation in placenta praevia?

• Myometrium

• Near internal os

• Upper uterine segment

• Pouch of Douglas

Endometrium covering which of the following is called decidua capsularis?

• Chorion frondosum

• Abembryonic pole

• Uterine cavity other than site of implantation

• Cervix

Which is true about cells formed in cleavage?

• Increase in number and size

• Increase in number with same size

• Increase in number & decrease in size

• Decrease in number and size

Which of the following, along with corona radiata cells, is released from Graafian follicle during ovulation?

• Primary oocyte halted in metaphase 2

• Secondary oocyte halted in metaphase 2

• Primary oocyte halted in prophase

• Secondary oocyte halted in metaphase 1