Practice Questions

TLS Online TPP Program

#Question id: 7270

According to this figure which of the following option is incorrect?

#Unit 5. Developmental Biology

OTX is a general transcription factor, and B-catenin from the maternal cytoplasm is concentrated at the vegetal pole of the egg.
These transcriptional regulators are inherited by the micromeres and activate the Pmar1 gene. Pmar1 encodes a repressor of HesC.
In the veg2 macromeres, where activated Pmar1 protein represses the HesC repressor, the macromere specification and signaling genes are active.
In the veg2 cells, Pmar1 is not activated and the HesC gene product shuts down the skeletogenic genes; however, those cells containing Notch can respond to the Delta signal from the skeletogenic mesenchyme.

More Questions

TLS Online TPP Program

#Question id: 33519

#Unit 2. Cellular Organization

Assertion: Some genes are present in more than one copy or are related to one another.

Reason: Number of different types of genes is less than the total number of genes.

TLS Online TPP Program

#Question id: 33520

#Unit 2. Cellular Organization

What can be correctly inferred from the figure shown here.

A. Many genes are duplicated

B. Number of different gene families is larger than the total number of genes

C. A gene family arises by repeated duplication of an ancestral gene followed by accumulation of changes in sequence among the copies

TLS Online TPP Program

#Question id: 33521

#Unit 2. Cellular Organization

Operationally, we usually consider that two genes are orthologs if

TLS Online TPP Program

#Question id: 33522

#Unit 2. Cellular Organization

Alignment of two entire genome sequences and comparison of the locations of orthologs is done by

TLS Online TPP Program

#Question id: 33523

#Unit 2. Cellular Organization

The fruit fly genome can be divided into genes as shown in the figure. Which statement is incorrect according to the figure given?

TLS Online TPP Program

#Question id: 33524

#Unit 2. Cellular Organization

A. Only 1% of the human genome consists of exons.

B. The genes (exons plus introns) comprise 25% of the genome.

C. 60% of human genes are alternatively spliced.

D. Up to 80% of the alternative splices change protein sequence, so the human proteome has 50,000 to 60,000 members.

Find true and false statements