Science Assessment Term 1

Hey everyone, today I am gonna be talking about most of the things I’ve learn’t this year.

Starting of with DNA and What it means:

DNA stands for Deoxyribonucleic Acid. It looks like a potato spiral, and has connecting parts that kind of look like ribs, or a twisted ladder. There are four types of nucleotide bases in DNA, there being, 1 – Adenine (A), 2 – Thymine (T), 3 – Guanine (G), 4 – Cytosine (C). Each has a partner and a specific bond called the “complementary base pairing rule”. The bonds made for the four bases are, A-Adenine pairs with T-Thymine, and G-Guanine bonds with C-Cytosine, only the two pair are mental to be.

Facts:

1. DNA is inherited (passed down from parents to children)
2. Every individual has a unique and mix of their parents DNA (except for identical twins)
3. DNA carries genetic info used for development and function of living organisms.
4. There is Phosphate, Sugar and one of the base (example: A-Adenine) that is a part of DNA
5. Humans have 23 pairs of chromosomes (there being 46 chromosomes in total)

Next thing we learnt this term was Gene: Gene is something that is passed down from your parents, an example of that would be how you look, for

 

Then there was Trait: 

Inherit: The definition of inherit to have a characteristic, trait or quality, passed down through generations passed down from parents and ancestors from way back then. An example of that is something like a trait from your parents physical or internal (like a disease example:diabetes) trait, that is given from mum or dad, whichever has the more dominant trait is passed down, making you look like them or have a condition.

Facts:

1. Half of yours or my chromosomes can be inherited/passed down from each parent.
2. The genes we inherit from our parents are random.
3. There will be a probability that inheriting some traits is greater than others, having a more dominant gene.

What are punnet squares?: Punnet squares is basically a table shown to others what could happen when a pair of parents alleles fuse to make an offspring, showing which could be the more dominant or receiving side.

 

 

Natural selection: Natural selection is the survival of the fittest. It is when one, human or animal adapts to survive from predators, habitats and their diets, to survive and reproduce.

 

Reproduction: Reproduction is when two parents go through natural selection and surviving through the challenge they meet a special some one and have a cuddle to make a baby and pass down the good traits for the next generation to survive.

 

Evolution: Evolution is when a generation goes through natural selection to survive and reproduce, adapting each time.