Turner Syndrome

Zoology: Solved Previous Year Question Paper for NCERT/ CBSE Class 12th Zoology Paper code (SEIIRKO-13-81020-Q) 

Leave a Comment / Botany, Solved Previous Year Question Paper for NCERT/ CBSE Class 12th Zoology /

Question: Define Fertilization. Briefly enlist the events that take place during Fertilization.
Answer: Fertilization is the fusion of a sperm cell and an egg cell to form a single cell that has genetic material from both the egg and the sperm.
Events that take place during Fertilization:
1. Sperm binds to the egg and penetrates its outer layer.
2. The sperm and egg nuclei fuse, forming a single nucleus.
3. The egg is activated and begins the process of cell division.
4. The zygote begins to divide into two cells, then four cells, and so on.
5. The zygote starts to travel down the fallopian tube towards the uterus.

Zoology: Solved Previous Year Question Paper for NCERT/ CBSE Class 12th Zoology Paper code (SEIIRKO-13-81020-Q)  Read More »

Genetic Disorders or Syndromes: Down syndrome, Turner syndrome, Phenylketonuria (PKU), and, Klinefelter Syndrome For Class 11th, and 12th  

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Klinefelter Syndrome
Dr. Harry Klinefelter and his colleagues originally identified the set of characteristics that has come to be known as Klinefelter Syndrome in 1942. By the late 1950s, scientists had found that men who experienced this set of symptoms possessed an additional sex chromosome, XXY, rather than the typical male configuration of XY. Even while XXY is frequent, the condition is not prevalent. Many guys go through life never even realizing that they have an extra chromosome. Due to this, the name “Klinefelter syndrome” is no longer widely used in the medical field. Instead, many professionals prefer to refer to guys with an additional chromosome as “XXY males.”

Genetic Disorders or Syndromes: Down syndrome, Turner syndrome, Phenylketonuria (PKU), and, Klinefelter Syndrome For Class 11th, and 12th   Read More »