Which of the following is a necessary characteristic of the dye in loading buffe

Question

Which of the following is a necessary characteristic of the dye in loading buffer?

a It must be less dense than water

b It must be nonpolar

c It must be negatively charged

BRCA1 mutations are often not 100% penetrant for reasons which include all of the following except:

b.

Environmental modifiers such as hormone therapy and age at the first pregnancy may vary

c.

Epigenetic regulation may play a role

d.

The BRCA1 gene is on the X chromosome and is subject to X chromosome inactivation.

I its cell division promoting form, the RAS protein is associated with

-ATP

-GTP

-RNA

-GDP

b.

Environmental modifiers such as hormone therapy and age at the first pregnancy may vary

c.

Epigenetic regulation may play a role

d.

The BRCA1 gene is on the X chromosome and is subject to X chromosome inactivation.

Explanation / Answer

1) The necessary characteristic of the dye in loading buffer is that it must negatively charged as it helps to study DNA as ti can be detected by electric current applied

2) The BRCA1 gene is on the X chromosome and is subject to X chromosome inactivation.

3) RAS associated with GTP

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