What is pedigree analysis? Suggest how such an analysis, can be useful.

Two heterozygous parents are crossed. If the two loci are linked what would be the distribution of phenotypic features in F1 generation for a dihybrid cross?

When a cross in made between tall plants with yellow seeds (TtYy) and tall plant with

green seed (TtYy), what proportions of phenotype in the offspring could be expected to be

(a) Tall and green.

(b) Dwarf and green.

Using a Punnett square, work out the distribution of phenotypic features in the first filial generation after a cross between a homozygous female and a heterozygous male for a single locus.

Define and design a test − cross?

Explain the Law of Dominance using a monohybrid cross.

A diploid organism is heterozygous for 4 loci, how many types of gametes can be

produced?

What is the difference between the Dominance and Recessive

Mention the advantages of selecting pea plant for experiment by Mendel.

Two forces are such that the sum of their magnitudes is 18 N and their resultant which has magnitude 12 N, is perpendicular to the smaller force. Then the magnitudes of the forces are :

When forces F_{1}, *F _{2}, F_{3} *are acting on a particle of mass

*m*such that

*F*and

_{2}*F*are mutually perpendicular, then the particle remains stationary. If

_{2}*the*force

*F*is now removed, then the acceleration of the particle is:

_{1}

Moment of inertia of a circular wire of mass *M *and radius R about its diameter is :

Why even Carnot engine cannot give 100% efficiency?

In a transformer, number of turns in the primary are 140 and that in the secondary are 280. If current in primary is 4 A, then that in the secondary is :

The time period of a charged particle undergoing a circular motion in a uniform magnetic field is independent of its

At what temperature is the rms velocity of a hydrogen molecule equal to that of an oxygen molecule at 47°C ?

The mass of a product liberated on anode in an electrochemical cell depends on?

Note: *t* is the time period for which the *c*urrent is passed.

A lift is moving down with acceleration *a*. A man in the lift drops a ball inside the lift. The acceleration of the ball as observed by the man in the lift and a man standing stationary on the ground are respectively :

A child swinging on a swing in sitting position, stands up, then what will be the time period of the swing?

At absolute zero, Si acts as:

Heat given to a body which raises its temperature by 1°C is

If a current is passed through a spring then the spring will :

Two identical particles move towards each other with velocity 2*v* and *v* respectively. The velocity of centre of mass is :

Wavelength of light used in an optical instrument are then ratio of their respective resolving powers (corresponding to ) is:

If in the circuit, power dissipation is 150 W, then *R is :*

A charged particle q is placed at the centre *O *of cube of length *L (ABCDEPGH). *Another same .charge *q *is placed at a distance *L *from *O. *Then the electric flux through *ABCD *is :

If a spring has time period *T, *and is cut into *n* equal parts, then the time period of each part will *be :*

Energy required to move a body of mass *m* from an orbit of radius 2R to 3R is:

If an electron and a proton having same momenta enter perpendicularly to a magnetic field, then :

On moving a charge of 20 C by 2 cm, 2 J of work is done, then the political difference bwteen the points is:

A tuning fork arrangement (pair) produces 4 beats/s with one fork of frequency 288. cps. A little wax is placed on the unknown fork and it then produces 2 beats/s. The frequency of the unknown fork is :

Tube A has both ends open while tube B has one end closed, otherwise they are identical. The ratio Of fundamental frequency of tubes A and B is :

If 13.6 eV energy is required to ionize the hydrogen atom, then the energy required to remove an electron from n = 2 is :

If three positive real numbers a, b, c are in A.P such that abc =4, then minimum value of b is?

Three numbers are chosen at random without replacement from 1,2,3 ............10. The probability that minimum of chosen number is 4 and their maximum is 8.

The real value of 'a' for which sum of square of the roots of the equation

A Wire When connected to 220 V mains supply has power dissipation . Now the wire is cut into two equal pieces which are connected in parallel to the same supply. Power dissipation in this case is .

If two mirrors are kept at 60 degree to each other, then the number of images formed by them is :

If in a circular coil A of Radius R, current i is following and in another coil B of radius 2R is current 2i is flowing, then the ratio of the magnetic fields

If an ammeter is to be used in a place of a voltmeter, then we must connect with the ammeter a:

If suddnly the gravitational force of attraction between earth and a satellite revolving around it becomes zero, then satellaite will:

If a body looses half of its velocity on penetrating 3 cm in a wooden block, then how much will it penetrate more before coming to rest?

From a building two balls A and B are thrown such that A is thrown upwards and B is thrown downwards (both vertically).

A ball whoose Kinetic Energy is E, is projected at an angle of 45 degree to the horizontal. The kinetic energy of the ball at the highest point of its flight will be:

The minimum velocity (in ms^{-I}) with which a car driver must traverse a flat curve of radius 150 m and coefficient of friction 0.6 to avoid skidding is :

Initial angular velocity of a circular disc of mass M is . Then two small spheres of *mass *m are attached gently to two diametrically opposite points on the edge of the disc. What is the final angular velocity of the disc?

In a simple harmonic oscillator, at the mean position

## The part of a transistor which is most heavily doped to produce large number of majority carriers is

The part of a transistor which is most heavily doped to produce large number of majority carriers is