January 19

how cells multiply

in this blog I will be discussing the differences, advantages and disadvantages of Asexual and Sexual reproduction.

Asexual

Asexual reproduction only requires only one cell for it to make a genetically identical call or a sister cell. in this type of reproduction it uses Mitosis, which is when a cell divides it makes 2 sister cells. some of the advantages of this type of reproduction is when the cell is ready to “mate” it does not need to find a partner but can split apart. another advantage is when you get a cut or grow (which you do every day) your cells can multiply to replace the lost cells, and or when you grow you get more and more cells to multiply and take the place of old ones. but some of the disadvantages of this is if there is a disease that can kill one cell it can kill all the other same cells.

Sexual

Sexual reproduction requires 2 partners (a male and a female) to make off-spring (children) that will contain 23 chromosomes from the mother and 23 chromosomes from the father which is the genetic make up of you and everything you like, dislike, how you act and everything unique about you. (this type of reproduction is also known as meiosis). the advantages of this are when 2 parents make you the 23 chromosomes from each try to take the better parts of the DNA strands of the male sperm and female egg, which can also increase the chance of having a better immune system then your parents. but some disadvantages are if one of your parents had a disease like AIDS or Wilsons disease (I did Wilsons disease for my mutation story) it is possible that the disease can be transferred into your DNA possibly causing problems in the future, another one is Sexual reproduction requires more energy then Asexual does.

 

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December 14

DNA Candy

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for science we had to create a DNA stem, following the TAC GTA TGA  – AT GC -, using coloured marshmallows, liquorice, and toothpicks. Each colour of marshmallow represented a different letter of the combination (T,A,G or C). this project was different way of learning but at the end it made sense. it was nice to have help from Olivia because she told me what to do and I made it, and it was fun but mostly because I ate most of the marshmallows. and they were good!

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December 13

light lab proposal

a few days ago we talked with people in a school in the Dominican republic and what it was like living there. we learned that they use candles for most of their light but it tends to burn down house to often and the lights they do have it is hard to come across a battery for it. today we talked about our projects with another school that had done this before. as they were talking they said that their hand crank flash lights that the crank on it tends to break. so after we were done Gavin, Liam and I talked about what we could do and so we decided to make a solar powered flash light that they could take with them to work and charge it by tying the light/battery to their backs and Velcro the solar panel to his or her head. we will try to make the money we need by contacting a company that already does stuff like this or bake sales or something else

 

 

-by Owen

Mr. Robinson if you finally see this can you tell me cause this is the 4th time I have uploaded this but it never works

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