Genetics and Variation Flashcards
What do you call an animal with a backbone?
A Vertebrate.
What do you call an animal without a backbone?
An Invertebrate.
Key features of a Fish?
Scales, they lay eggs, gills, cold-blooded.
Key features of an amphibian?
Smooth skin, lay eggs, cold-blood.
Key features of a reptile?
Scales, lay eggs, cold-blood, lungs.
Key features of a mammal?
Live birth, hair/fur, lungs, warm-blooded.
Key features of a bird?
Feathers, warm-blooded, lay eggs, lungs.
Some examples of Inherited Characteristics?
Shape of Nose, eye colour, blood group, size of feet, freckles.
Some examples of Environmental characteristics?
Scars, neat writing, hair length, musical talent, sports talent, accent.
What is heredity?
The process by which genetic information is transmitted from one generation to the next.
How many pairs of chromosomes does the human body contain?
23 pairs, which are inherited from parents.
What is the double helix?
The spiral structure of DNA.
What is a chromosome?
A very long molecule of tightly coiled DNA.
What are base pairs?
They form the ladder rungs of a DNA molecule.
What is a gene?
A very small section of a chromosome.
