Biology Question:?

Question

1. Genes are
a. inheritable.
b. found at a specific location on a chromosome.
c. sequences of nucleotides on a DNA molecule.
d. All of the choices are correct.

2.Test crosses are required to determine the genotype of homozygous recessive individuals.
a. True
b. False

3. If present, dominant alleles are
a. always expressed.
b. never expressed.
c. only expressed when the organism is homozygous.
d. only expressed when the organism is heterozygous.
e. None of the choices

4. Which technique can be used to separate the components of a complex mixture of relatively small organic molecules based on their relative solubility?
a. Electrophoresis
b. Thin-layer chromatography
c. Liquid scintillation counting
d. Scanning electron microscopy

5.
Which technique is used to separate proteins from each other on basis of molecular mass?

a. Electrophoresis
b. Thin-layer chromatography
c. Liquid scintillation counting

Answer 1

1. d.
2. b.
3. a.
4. b.
5. a.

Answer 2

1.d 2.a 3.d 4.c 5.a

Answer 3

I agree with the previous answer. If you have specific things that you don't understand, ask here, and someone will probably be able to explain them to you. But don't just ask us to do your homework for you.

Also, be careful about just using any answers you get here, you might find them to be totally wrong just out of spite with your asking us to do your homework for you.

Answer 4

This looks way too much like a test!

Look it up. Us giving you the answers without you knowing why isn't going to help at all.