Question

In: Biology

34. The normal implantation site is where? 35. Describe somite development. 36. The most distinctive characteristic...

34. The normal implantation site is where?

35. Describe somite development.

36. The most distinctive characteristic of a primary chorionic villus is its what?

37. Diagram the correct developmental path of the male gamete

Solutions

Expert Solution

34)superior and posterior walls of uterine cavity in the functional layer of endometrium is the normal implantation site

35) somite development is called somitogenesis

  • Paraxial mesoderm cells organise into a whorl of cells called somitomeres which are not differentiated
  • As the cells mature,outer cells differentiate into epithelial cells
  • Results in the formation of distinct boundary between cells
  • Somites separated into cranial and caudal portion
  • Metameric shifting occurs when the cranial portion if each fuses with the caudal portion of somites anterior to it
  • As the body matures gradually,somites gets differentiated into specific tissues of the body

36)most distinctive characteristic of a primary chorionic villus is it's cytotrophoblastic core

37) developmental path of male gamete is explained in the figure below:-

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