My Paragraphs

Genetic modification changes an organism’s genes. Traditional breeding techniques cannot change the gene in ways that Gm breeding can. For example, cotton can be made insect resistant using genes from a bacteria. GM is commonly used in the genetic industry today + can have a positive effect on organisms.

Cutting DNA from one organism and pasting it to another organism is called gene splicing, this can transfer characteristics from one organism to another. An example of this is they took the DNA of a jelly fish and injected it into a mice and now the mice glows. Gene splicing can be transferred from and organism to another.

Animal cloning is when a donor donates a body cell to create a clone of themselves. This happens when the donor donates a cell and another woman donates a egg then the DNA is placed in that egg. Then an electric stimulus then is placed in the new egg and the clone is created. An example of this is dolly she sheep who was the first successful clone. Cloning is not very successful in animals.

A day in the life of a sperm.

Zak the sperm is very exited today because him and his arranged wife eggzila are going to meet and fertilise today. He is going to be shot out of this cannon like thing and up the fallopian tube then into the uterus where they will meet for the first time.  Once Zak has been shot up the fallopian tube he will then begin a 2 hour journey to the end of the fallopian tube. Zak will then penetrate the egg. “Aww damn damn my tail fell off” Zak said. Zak and eggzila then connected with each other and then formed an embryo. They reach the uterus. 3-6 days after ovulation which is made up of about 16 cells.

Stages of Pregnancy

http://www.medicinenet.com/fetal_development_pictures_slideshow/article.htm

 

The Menstrual Cycle

1. Girls usually have a menstrual cycle of 28 days.
2. Day 1 of the menstrual cycle is when a girls “period” begins and she bleed from the vagina.
3. Another word for a girls period is menstruation and it usually lasts 2 – 7 days.
4. Hormones regulate the different stages of the menstrual cycle.
5. The lining of the uterus shreds during the menstrual cycle to provide a nutrient lining for a fertilised egg to attach.
6.  Ovulation is when the ovary is released from the ovary.
7. The egg needs to be fertilized by a sperm while travelling down the fallopian tube.

Mitosis Wordle

MITOSIS FOLLOW-UP

1. What do the terms diploid & haploid mean? Containing two complete sets of chromosomes, one from each parent.  Having a single set of unpaired chromosomes.

   2. Why do the chromosomes need to double before the cell divides? If the chromosomes did not duplicate, the new daughter cells would not have the correct amount of genetic information to function.

    

   3. How many chromosomes does a human cell contain? In humans, each cell normally contains 23 pairs of chromosomes, for a total of 46.

   4. How many chromosomes does a dog cell contain? A dog has 78 chromosomes or 39 pairs of chromosomes.

   5. What could happen to the cell if the chromosomes do not separate correctly? It will cause down syndrome.

    

Understanding the structure of DNA & the process of mitosis