Question

If every cell in the body gets the same DNA, how do the cells of an embryo make different structures and take on different roles? (Select all that apply.)

A. Different transcription factors are active in different cells.

B. Different transcription factors are encoded in the DNA.

C. Genes are spliced differently in different cells.

D. Translation is regulated so that different cells may make more of certain proteins.

E. Some cells lack ribosomes while others use them.

F. Cells delete a set of unused genes from their chromosomes.

Answer 1

Answer B is more correct and more explainable

Transcription factor is the molecule that controls the activity of a gene by determining whether the gene’s DNA is transcribed into RNA.
The enzyme RNA polymerase catalyzes the chemical reactions that synthesize RNA, using the gene’s DNA as a template. Transcription factors control when, where, and how efficiently RNA polymerases function.

Transcription factors are vital for the normal development of an organism, as well as for routine cellular functions and response to disease.
Transcription factors are a very diverse structures of proteins and generally function in multi-subunit protein complexes.
They may bind directly to special “promoter” regions of DNA, which lie upstream of the coding region in a gene, or directly to the RNA polymerase molecule.
Transcription factors can activate or repress the transcription of a gene, which is generally a key determinant in whether the gene functions at a given time.

Including option "B" Other correct answers are

A,C,D