Browse and search thousands of solved questions for your preparation.
Free questions with full explanations — locked behind signup to protect quality.
Which of the following is/are related to STDs?
F2 generation in a Mendelian cross showed that both genotypic and phenotypic ratios are same as 1:2:1. It represents a case of:
What is the pattern of inheritance for polygenic traits?
A test cross is carried out to:
A heterozygous pea plant with violet flowers was crossed with a homozygous pea plant with white flowers. Violet is dominant over white. Which one of the following represents the expected combinations among 40 progenies formed?
Two bodies of different masses $m_a$ and $m_b$ are dropped from two different heights $a$ and $b$. The ratio of the time taken by the two to cover these distances is:
The production of gametes by the parents, formation of zygotes, the F1 and F2 plants, can be understood from a diagram called:
Reason for trisomy in Down's syndrome is:
Inheritance of skin colour in humans is an example of:
Point mutation involves:
If a colour blind female marries a man whose mother was also colour blind, what are the chances of her progeny having colour blindness?
The marked part as 'x' in the given figure (L.S. of an Apple) is:
A body dropped from a height $h$ with an initial speed of zero, strikes the ground with a velocity $3 \text{ km/h}$. Another body of the same mass is dropped from the same height $h$ with an initial speed $u' = 4 \text{ km/h}$. Find the final velocity of the second body with which it strikes the ground.
A man and a woman, who do not show any apparent signs of a certain inherited disease, have seven children (2 daughters and 5 sons). Three of the sons suffer from the given disease but none of the daughters are affected. Which of the following mode of inheritance might be the reason for this disease?
Which one from those given below is the period for Mendel's hybridization experiments?
The term "linkage" was coined by?
In animal kingdom, along with XX-YY mechanism, many other variants of chromosomal sex determination mechanisms have been described such as XX-XO mechanism, ZZ-ZW mechanism, ZZ-ZO mechanism and haplo-diploidy mechanism, which are present respectively in:
Among the following characters, which one was not considered by Mendel in his experiments on pea?
With what velocity a ball be projected vertically so that the distance covered by it in 5th second is twice the distance it covers in its 6th second ($g=10 \text{ m/s}^2$)?
The unit of permittivity of free space $\varepsilon_0$ is