. Define the term morphogen

Define the term thecodont.

in a healthy female, how many secondary oocytes would be expected to form from 100 primary oocytes? How many second polar bodies would be expected to form from 100 primary cocytes? A 100;100 B 400: 200 C 200; 100 D 50; 50 E 100:0

A. Explain how mutation causes variation. Give examples. B. Explain how meiosis causes genetic variation in the gametes. (150 words for Task 1)

Give the typical sex-chromosome complement found in the cells of people with Turner syndrome, with Klinefelter syndrome, and with androgen-insensitivity syndrome. What is the sex-chromosome complement of triple-X females?

Explain polygenic inheritance (EC)

Briefly explain what occurs in G1 phase including how and why this phase is important in the cell cycle.

Describe how a morphogen acts in development.

Explain how most cells can have the same genetic content and yet have different functions in the body especially during development.