Variation and Selection

“Working in pairs, you watch the videos on the entry and take notes, brainstorming, using bullet points, etc…, to answer:” I have worked with Nina Fischer

What did I learn today? Question it.

I have learnt that variation is the differences between the organisims from the same species, intraspecific, or between different species, intervariation.  The causes of variation may be by genetic, like meiosis, mutation or fusion of gametes, or environmental, which affects how genes are expressed, influence. When living organisms reproduce themselves, their offspring are not the exact copy of them, they are different from their parents and from the other offsprings. Each offspring gets a different combination of genes from their parents and thats why they end up being all different.

The variations that make an animal or plant more likely to survive in an environment are called adaption. Adaption makes the organism succesful, which means he is able to survive and pass on those characteristic that helped him survive in that environment.

Mind map

Link it to other subjects.

History, because we could think about how did we end up being who we are now, and thats our history.


Video 1

Video 2

Questions 4 and 5

4 i) That there are more people with free earlobes than people with attached earlobe, according to the gender, the number vary in that sense.

ii) 8

iii) That still, not all of us have attached earlobe because not all our parents had that characteristic, so it wasn’t passed on to many of us. The people that have an attached earlobe will pass it on to the following generation and with time, evolution will ocurr.

5a)  A special leg to be able so that it’s easier to stand on trees. Feathers, to be able to fly and protect themselves from cold times. Beak, to be able to get insects in the ground, having a large span of beack to reach them.

b) There are many birds and according to their body size, the wings will always be different.

c i) As we can see in the table it says that birds with a wing lenght of 66-67 mm survived  346 and 349 days, while the other ones did not even get to 300.


d) Because the ones more likely to survive are those birds, so they are the ones that will be able to reproduce passing on their characteristics, while the other ones will not have that big chance to survive , as well as the chance to reproduce and pass on their characteristics.



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