Question

compare selection and mutation

1. DNA molecules in the cells exist as a........ 2. DNA carry the information to build and maintain the cells life by four letters of genetic language True False 3. The term phenotype is used to describe all of the organism's genetic information True / False 4. All of the organism DNA encode genes True/ False 5. Bacteria have one chromosome which is circular structure associated with proteins (no histones) True False 6. In the process of replication of DNA each daughter double-stranded DNA molecule contains one original and one new strand True False 7. DNA polymerase synthesizes DNA in one direction only and it is.... 8. In prokaryotes, translation of an mRNA molecule can begin before transcription of the mRNA molecule is completed. True / False DOS Oturmato 9. Plasmids may encode toxin genes that enhance the pathogenicity of an organism. True False 10. Genome is: a. All of the genes of an organism b. Entire DNA in a cell C. A segment of DNA that encodes a functional product d. All of the above

Answer 1

Note: Only the first four questions/parts can be answered at once. Therefore, the first four (question no 1-4) have been answered with proper explanations.

Question 1

Answer: Chromosome.

Each DNA molecule should be tightly packed and this tightly packed structure of DNA molecules exists as chromosomes.

Question 2

Answer: True.

The information regarding building and maintaining a cell's life in DNA is stored as a code made up of four chemical bases: adenine (A), thymine (T) guanine (G), and cytosine (C).

Question 3

Answer: False.

Phylogeny is the physical characteristics of an organism. The genetic information is derived from the genotype.

Question 4

Answer: False.

There are non-coding (encoding) genes like the introns which do not encode gene.