Selection and Survival

Analysis:

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 children have short necks?

A:  NN= Brown-Short neck

Nn= Brown- Short Neck

Nn= Green- Long neck

Q: Why are only short neck tortoises affected by the food shortage?

A: Because the short neck torouses cant reach the plants while the long necks can.

Q: How many of the grandchildren have long necks?

A: 8 tortoises

Q: Is this number more, less, or the same as the number of children who had long necks?

A: There are the same amount of long and short neck tortoises

Conclusion:

Q: What has happened to the number of long neck tortoises in the area?

A: The Number has risen because there are more short neck toroises

Q: What has happened to the number of short neck tortoises in the area?

A: They have dropped because the short necks can’t reach all the food.

Going further

Q: What do you think would happen to the species?

A: I think the short neck tortoises would die out because they would run out of food they could reach, and the long neck tortoises would be able to reach all the food and eat everything.