List of top Genetics, Cellular and Molecular Biology Questions

The output \( y(t) \) of a first-order process is governed by the following differential equation: \[ \tau_p \frac{dy}{dt} + y = K_p f(t) \] where \( \tau_p \) is a non-zero time constant, \( K_p \) is the gain, and \( f(t) \) is the input with \( f(0) = 0 \). Assume \( y(0) = 0 \). The transfer function for this process is (consider \( s \) as the independent variable in the Laplace domain).

A cultured skin fibroblast cell of a goat ‘P’ was fused with an enucleated ovum of a goat 'Q'. The resultant activated early embryo was then transplanted into a pseudopregnant (surrogate) female goat 'R' of the same strain as 'Q'. On completion of gestation, a female goat 'S' was born. With the exception of mitochondrial DNA, 'S' is a clone of

Under which of the following conditions, a mammalian somatic cell fails to undergo mitosis during cell cycle?

Co-translational translocation of proteins is observed in____

Mendel's 'law of segregation' applies to the segregation of________ gamete formation.

During normal embryonic development of the mice paw, elimination of cells from the inter-digital space is due to____

A circular plasmid has three different but unique restriction sites for enzymes 'a', 'b' and 'c.' When enzymes 'a' and 'b' are used together, two fragments of equal size are generated. Enzyme 'c' creates fragments of equal size only from one of the fragments generated by those cleaved by 'a' and 'b'. The plasmid is treated with a mixture of 'a', 'b' and 'c' and analysed by agarose gel electrophoresis. The number of bands observed in the gel is _________.

Which of the following statement(s) regarding trafficking in eukaryotic cells is(are) CORRECT?

Which statement(s) is(are) CORRECT about the lac operon of \textit{E. coli when grown in the presence of glucose and lactose?}

Adenine can undergo a spontaneous change to hypoxanthine in a cell, leading to a DNA base pair mismatch. The CORRECT combination of enzymes involved in repairing this damage is:

The enzymes involved in ubiquitinylation of cell-cycle proteins are

Assuming independent assortment and no recombination, the number of different combinations of maternal and paternal chromosomes in gametes of an organism with a diploid number of 12 is _________.

In animal cells, the endogenously produced miRNAs silence gene expression by