A. Lampbrush chromosomes are formed during an unusually extended mitosis

B. The lampbrush chromosomes are meiotic bivalents, each consisting of paired homologous chromosomes that have been replicated

C. The lampbrush chromosomes are held together only by chiasmata that indicate points of chromosome crossover.

D. The loops around Lampbrush are surrounded by a matrix of ribonucleoproteins that contain nascent RNA chains.

TLS Online TPP Program

#Question id: 15782

#Unit 5. Developmental Biology

Adult cells may be reprogrammed to gain pluripotency by modifying the genes namely 

TLS Online TPP Program

#Question id: 15783

#Unit 5. Developmental Biology

During the formation of induced pluripotent stem cell, what is the function of Klf-4?

TLS Online TPP Program

#Question id: 15784

#Unit 5. Developmental Biology

During the formation of induced pluripotent stem cell, what is the function of C-myc?

TLS Online TPP Program

#Question id: 15785

#Unit 5. Developmental Biology

During the formation of induced pluripotent stem cell, what is the function of Sox2 and Oct4?

A. Established pluripotency and blocked differentiation.

B. Opened up chromatin

C. Activation of Nanog.

D. Promotes cell growth and proliferation

TLS Online TPP Program

#Question id: 15786

#Unit 5. Developmental Biology

Although iPSCs are functionally pluripotent, they are best at generating the cell types of the organ from which the parent somatic cell (naïve versus primed ESCs) originated. These data suggest that

TLS Online TPP Program

#Question id: 15811

#Unit 5. Developmental Biology

In XX Drosophila, which gene is activated during the first 2 hours after fertilization?