Question

1.a diploid organism whose cells all contain a chromosome number of 2n+1 has what type of condition ?

monosomy

teisomy

cancer

obesity

none, this is the normal chromosome number for human

2.enviromental factors such as pollutants affecting gene expression is an example of ?

polygenic inheritance

pleiotropy

mosaicism

epigrnetics

3.the form of chromatin associated with active gene expression is

euchromatin

heterochromatin

solenoid

recombinant

4.these structures are held together by cohesin proteins

nucleosomes

sister chromatide

solenoids

histones

Answer 1

Answer 1. Option teisomy should be written as trisomy which is the right answer. When the chrmosome number changes it is known as aneuploidy. If it is a gain of one chromosome then it is known as trisomy and if a chromosome is lost it is monosomy.

Answer 2. Epigenetics.

Answer 3. Euchromatin.

Answer 4. Nucleosomes.