Biology Topic 1 Flashcards
What is it called when an animal changes to suit a different climate?
Adaptation
What does survival of the fittest mean?
The best adapted species is most likely to survive
What is likely to happen to an individual that is poorly suited to its environment?
It will not survive to reproduce
What is likely to happen to an individual that is poorly suited to its environment?
It will not survive to reproduce
How is the polar bear adapted to survive the cold temperatures?
Thick layers of fat and fur for insulation
How does the Pompeii worm survive the high temperatures of the hydrothermal vent?
Utilises a thick layer of bacteria
What is discontinuous variation often caused by?
Discontinuous variation is often caused by inherited variation.
Which of the following is an example of continuous variation?
Height is an example of continuous variation. Eye colour is an example of discontinuous variation.
What is an allele?
A pair of genes that code for a certain characteristic
Where are chromosomes found in a cell?
Nucleus
