Thursday 7 June 2012

Tortoise Lab-Survival of the Fittest Long vs. Short Neck

Analysis
Q: Why are only short-necked tortoises affected by the food shortage.
A: The reason it affects them is because they long necks can eat from the bottom and top were the short necks can’t reach everything so they run out of food.

Q:On each square, write the genotype of the child. How many squares should you have in all?
A:16

Q:How do you know which children have long necks and which have short necks?
A:By the parents genotype and by using a punnett square like a father with nn and a mother with NN would equal 100% Nn brown.

Q: How many of the grandchildren have long necks?
A:  8 tortoise


Q: Is this number more, less, or the same as the number with long necks.

A:  There are the same amount of long necks and short necks.

Conclusion

Q: What has happened to the number of long neck tortoises in the area?
A: They have risen because there are less short necks every time.

Q: What has happened to the short neck tortoises in the area?
A:  They have shrunk in population because there is less food that they can reach because there short.

Q:What do you think would happen to the species?
A:I think the short necks would die out if everything stayed the same because they could not reach all the food so the long necks would survive.

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