List - I | List – II | ||
A. | Gene pool | i. | Stable within a generation |
B. | Genetic drift | ii. | Change in gene frequency by chance |
C. | Gene flow | iii. | Transfer of genes into or out of population |
D. | Gene frequency | iv. | Total number of genes and their alleles |
A. Gene pool: A gene pool represents the total number of genes and their alleles present in a population. A-IV
B. Genetic drift: Genetic drift refers to random fluctuations in allele frequencies within a population due to chance events. This can lead to the loss of some alleles and the fixation of others. B-II
C. Gene flow: Gene flow is the transfer of genetic material (genes) between populations through migration. C-III
D. Gene frequency: Gene frequency refers to the proportion of a particular allele within a population. This frequency can be stable within a generation but can change across generations due to evolutionary forces. D-I
List-I (Scientists) | List-II (Discovery) |
---|---|
(A) Sutton and Boveri | (II) Chromosomal Theory of Inheritance |
(B) Sturtevant | (IV) Genetic maps |
(C) Henking | (I) X-Body |
(D) Griffith | (III) Transformation in bacteria |
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A : The potential (V) at any axial point, at 2 m distance(r) from the centre of the dipole of dipole moment vector
\(\vec{P}\) of magnitude, 4 × 10-6 C m, is ± 9 × 103 V.
(Take \(\frac{1}{4\pi\epsilon_0}=9\times10^9\) SI units)
Reason R : \(V=±\frac{2P}{4\pi \epsilon_0r^2}\), where r is the distance of any axial point, situated at 2 m from the centre of the dipole.
In the light of the above statements, choose the correct answer from the options given below :
The output (Y) of the given logic gate is similar to the output of an/a :