Explanation

Epistasis occurs when the expression of one gene is affected by another gene at a different locus.

This interaction can mask or modify the effects of the other gene, leading to variations in phenotypes.

Explanation

Gel electrophoresis is a technique used to separate DNA fragments based on their size by applying an electric field to a gel matrix.

Explanation

Promoter sites are specific DNA sequences where RNA polymerase binds to initiate transcription, the process of copying a gene's DNA sequence into RNA.

Explanation

The renal cortex is the outermost, darker part of the kidney.

It responsible for filtering blood and producing urine.

Explanation

The structure of the earth is divided into four major components:

1. the crust,
2. the mantle,
3. the outer core,
4. the inner core.

Explanation

Arachnids, such as spiders and scorpions, are distinguished by having eight legs, a characteristic feature of this class.

Explanation

A body is in equilibrium when the net force acting on it is zero, and it is not changing its motion.

This means that the body is either at rest or moving with a constant velocity (uniform speed), but not accelerating.

Explanation

The nucleolus is the site within the nucleus where ribosomal RNA (rRNA) is synthesized and combined with proteins to form ribosome subunits.

Explanation

Phenotype refers to an individual's observable traits, such as height, eye color and blood type

A person's phenotype is determined by both their genomic makeup (genotype) and environmental factors.

Explanation

Richer Scale is used for measuring Strength of an earthquake.

The intensity of earthquake is measured by Richter Scale.

Richter Scale was invented in 1935.