(2009? The map of Zhangzhou is a schematic diagram of human inheritance. Please answer according to the picture: (1) The process of B is _ _ _ _ _, and the place where E cells are formed in human body is _ _ _ _ _ _. Solution: (1) The process of sperm and egg fusing to form a fertilized egg is called fertilization. In the picture, the process B is fertilization and the cell E is fertilized. The fertilized egg is formed in the fallopian tube, so the place where E cells are formed in the human body is the fallopian tube.

(2) Male chromosomes are 22 pairs +XY and female chromosomes are 22 pairs +XX. During the formation of parental germ cells, chromosomes are separated from each other by meiosis, and males produce two types of sperm-sperm with 22+X chromosome and sperm with 22+Y chromosome. The female produces only one kind of egg cell with 22+X chromosome. If the sperm containing 22+ and 22+Y is combined with the egg during fertilization, a fertilized egg with 44+XY will be produced and developed into a male. Because men can produce an equal number of 22+X sperm and 22+Y sperm, and their chances of combining with eggs are equal, the chances of giving birth to boys and girls at one time are equal. So F is a healthy girl, and her somatic chromosome composition is 44+XX. If her parents have another child, the possibility that the child is a girl is.

In the genetic process of a pair of relative traits, the offspring have a trait that both parents don't have, which is a recessive trait; Parental traits are dominant. So if her parents have earlobes and she doesn't, it means that earlobes are recessive.

So the answer is:

(1) fertilization; oviduct

(2) Article 44 +XX (or 22 pairs+XX); 50; ? retrograde