The section of a chromosome that controls a trait...
a gene
100
What do the capital and lower case letters represent when we talk about genetics?
they are the genes for a trait
100
Which of the following scientists studies animals:
- Botanist
- Zoologist
- Geologist
Zoologist
200
What are chromosomes?
structures in the nucleus that controls the cells activities
200
True or False:
All traits are physical characteristics.
False- sometimes our traits are effected by the environment that we live in
200
Name 4 visible traits that are inherited by humans
eye color, hair color, nose size, hair style, earlobes, height, etc.
200
Why are there two genes for one trait?
One gene from each parent
200
How many branches does a snowflake have?
6
300
How many chromosomes do our cells have?
46 chromosomes (23 pairs)
300
How are traits passed on?
from parent to offspring
300
What is a recessive gene?
A gene where the expression is hidden (unless you have two recessive genes for one trait)
300
What is the name of the "box" that we construct to determine the chances of offspring expressing a certain trait?
Punnett Square
300
What was the first animal that was cloned?
Sheep (it's name was Dolly)
400
Describe what happens when a cell divides.
When a cell divides it makes copies of all of its parts, meaning the new cells will be identical to the old ones
400
How come we don't look exactly like our parents?
Half of our traits are from our father and half from our mother. There are many different combination's of traits that we can receive from our parents, so we do not look exactly like them. However, we might have some similar characteristics as them.
400
What is a dominant gene?
The trait that you see; it prevents the expression of the recessive gene
400
Another name for a "sea wasp" is...
a jelly fish
500
If you broke your leg, why wouldn't it stay broken?
Our body loses cells when we have a cut or wound. Our body responds to this by growing new cells to heal the wounded area.
500
A person has a trait with one dominant and one recessive gene. This is called....
heterozygous
500
What is the second most common gas found in the air that we breathe?
oxygen (21%)
(Anyone know the #1 most common gas?)