Differentiation of organs and tissues in a developing organism, is associated with:

(1) developmental mutations

(2) differential expression of genes

(3) lethal mutations

(4) deletion of gens

In eukaryotes the gene expression is regulated at:
A. Transcriptional level
B. Processing level
C. Transport of mRNA from nucleus to the cytoplasm
D. Translational level
(1) A, C               

(2) A, B, C, D                 

(3) B, C, D                     

(4) A, B, C

Regulation of gene expression in eukaryotes cannot take place at

(1)primary transcript level

(2)splicing level

(3)transport of m-RNA from nucleus to cytoplasm

(4)replication level

The development and differentiation of embryo into adult organisms are result of

(1)chemical regulation of expression of several sets of genes

(2)Electrical and Chemical regulation of expression of several sets of genes

(3)coordinated regulation of expression of several sets of genes

(4)All of above

Exon part of m-RNAs have code for:

1. Protein

2. Lipid

3. Carbohydrate

4. Phospholipid