If 4 individuals in a laboratory population of 40 fruitflies died during a specific time interval of one week. What will be the death rate of the population during that period?

The puffed-up appearance of dough is due to the production of :

Arrange the given structures in correct sequence of transcription unit when we move from left to right?
(A) Terminator
(B) Promoter
(C) Structural gene
(D) Transcription start site
Choose the correct answer from the options given below:

Which one of the following regions is not present in transcriptional unit of DNA

Arrange the following events chronologically as they occur during embryonic development.
(A) Appearance of heart sounds
(B) Development of limbs and digits
(C) Formation of three primary germ layers
(D) Separation of eyelids
Choose the correct answer from the options given below:

Identify the correct sequence of events during the menstrual cycle in female.
(A) Next cycle begins
(B) Proliferative phase
(C) Menstruation
(D) Secretory phase
Choose the correct answer from the options given below:

Read the passage carefully and give the answers to the question :
Does the number of species in a community really matter to the functioning of the ecosystem? This is a question for which ecologists have not been able to give a definitive answer. For many decades, ecologists believed that communities with more species, generally, tend to be more stable than those with less species. According to the International Union for Conservation of Nature and Natural Resources (IUCN) (2004), the total number of plant and animal species described so far is more than 1.5 million.
The scientist who proved that species richness directly correlates with the stability of a community, was

A wire of resistance 20 Ω is bent to form a complete circle. What will be its resistance between two diametrically opposite points?

Read the following paragraph carefully and answer the given questions.
In the year 1963 the two enzymes responsible for restricting the growth of bacteriophage in E. coli were isolated. The first restriction endonuclease - Hind II, whose functioning depended on a specific DNA nucleotide sequence was characterized five years later. It was found that Hind II always cut DNA molecules at a particular point by recognizing a specific sequence of six base pairs. This specific base sequence is known as the recognition sequence for Hind II. Besides Hind II, today we know more than 900 restriction enzymes that have been isolated from over 230 strains of bacteria, each of which recognize different recognition sequences.
Restriction enzymes are also known as

An electric dipole of length 4 cm, when placed with its axis making an angle of \( 60^{\circ} \) with a uniform electric field, experiences a torque of \( 4\sqrt{3} \text{ N m} \). If the dipole has charges of \( \pm 8 \text{ nC} \), then the potential energy of the dipole in the electric field is:

Read the given passage and answer the question.
ABO blood groups in human beings are controlled by the gene I. The plasma membrane of the red blood cells has sugar polymers that protrude from its surfaces and the kind of sugar is controlled by the gene. The gene (I) has three alleles IA, IB and I. The alleles IA and IB produce a slightly different form of the sugar while allele i does not produce any sugar. Because humans are diploid organisms, each person possesses any two of the three I gene alleles, IA and IB are completely dominant over I.
Select the correct option for number of alleles present in ABO blood groups:

The integral \(\int e^x\left(\frac{x-1}{2 x^2}\right)\)dx is equal to

When an \( \alpha \)-particle of mass M moving with velocity v bombards a heavy nucleus of charge Ze, its distance of closest approach from the nucleus depends on M as