List of top Genetics, Cellular and Molecular Biology Questions

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

In a random mating population, the frequency of Y allele is 0.70. The frequency of Yy heterozygotes is \(\underline{\hspace{1cm}}\).

In a Mendel's dihybrid experiment, a homozygous pea plant with round yellow seeds was crossed with a homozygous plant with wrinkled green seeds. F\(_1\) intercross produced 560 F\(_2\) progeny. The number of F\(_2\) progeny having both dominant traits (round and yellow) is \(\underline{\hspace{1cm}}\).

In Neurospora crassa, a mutation in the poky gene results in slow growth (poky). The results of four crosses are given:
(1) wild-type ♀ × wild-type ♂ → All progeny wild-type
(2) wild-type ♀ × poky ♂ → All progeny wild-type
(3) poky ♀ × wild-type ♂ → All progeny poky
(4) poky ♀ × poky ♂ → All progeny poky
Which one of the following explains the inheritance mode of poky?

Which of the following cell organelle(s) is/are surrounded by a single phospholipid membrane?

Which of the following layer(s) is/are formed from the inner cell mass of the blastocyst?

The cellular process which utilizes RNA-induced silencing complex to block gene expression is

The process by which intracellular macromolecules are supplied for lysosomal degradation during nutrient starvation is:

The enzyme that transcribes the eukaryotic genes encoding precursor ribosomal RNAs (pre-rRNAs) of 28S, 18S and 5.8S rRNAs is