During gastrulation in the frog, the very first cells to move into the interior of the embryo through the blastopore come from the surface layer of cells in the marginal zone; they will become:

TLS Online TPP Program

#Question id: 33525

#Unit 2. Cellular Organization

The average human gene is 

TLS Online TPP Program

#Question id: 33526

#Unit 2. Cellular Organization

The number of protein-coding genes is less than the number of potential polypeptides that can result in several polypeptides from the same gene because of mechanisms 

A. alternative splicing

B. alternate promoter selection, 

C. alternate poly(A) site selection

D. Number of Introns in the gene

TLS Online TPP Program

#Question id: 33527

#Unit 2. Cellular Organization

Match the following

TLS Online TPP Program

#Question id: 33528

#Unit 2. Cellular Organization

The Y chromosome has 

TLS Online TPP Program

#Question id: 33529

#Unit 2. Cellular Organization

A. X and Y chromosomes have descended from a common, very ancient autosome pair. 

B. X and Y chromosomes have descended from different autosome. 

C. During evolution, the X chromosome has retained most of the original genes, whereas the Y chromosome has lost most of them.

D. During evolution, the X chromosome has lost most of them, whereas the Y chromosome has retained most of the original genes.

Which of the following is correct combination

TLS Online TPP Program

#Question id: 33530

#Unit 2. Cellular Organization

One approach to determine the number of essential genes

A. Mutational Analysis

B. Sequence Alignments

C. Complementation

D. Mass Spectroscopy