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Friday 28 August 2020

Zebrafish explanation

 Zebrafish text: https://drive.google.com/file/d/1AfZGT3Fw8xj7Mh_A0OxjRzK_qOIYHrko/view


New words: .

  • Anatomy- study of the body.

  • Post-fertilization  - after the boy part and girl part come together to make a baby (when the cells combine)

  • Himalayas - mountain range that separates China and India

  • Embryo - a group of cells that turn into a baby or egg

  • Genetic - relating to your DNA

  • Himalayas - A country that has a lot of Mountains

  • Ganges  - a long river in India

  • Organs - body parts

  • Juvenile - child/teenager

  •   Sections - slices  

  • Stained with dyes - putting different coloured liquids onto it so you can see different parts 

  • Coronal -  cutting in half vertically E.g. separating the front and the back 

  • Transverse -   cutting in half horizontally, E.g. cutting the head off the body

  •  Sagittal - cutting in half  vertically - E.g. cutting the left side away from the right side

Hope -  Zebrafish is transparent and they live in Ganges river in the wild, in India where they have fresh water. Scientists study the zebrafish because they are transparent so the scientists see inside it. Zebrafish is 2.5cm to 4cm long, Embryo is the egg of the zebrafish and has three layers which are single cell,yolk and chorion. After the scientists breed about a hundred or thousands of zebrafish they kill them and look at them under a microscope to study them. It takes 2 to 3 days for an egg to hatch, the zebrafish lifespan is 2 to 7 years.

These are different kinds of cuts.

  • Coronal -  cutting in half vertically E.g. separating the front and the back 

  • Transverse -   cutting in half horizontally, E.g. cutting the head off the body

  •  Sagittal - cutting in half  vertically - E.g. cutting the left side away from the right side.

Scientists kill the zebrafish at different ages(hour/days post fertilization). Scientists take photos of the different stages of how the organs grow. They use different kinds of dye to see different kinds of body parts and they take pictures of it to see the difference between zebrafish. 

                                               

This is a 48 year old coronal, the big round part is going to                This is a 48 transverse and the two big                  Be the body part                                                                                   circles are going to be the eyes


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