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Sickle cell anaemia is:
The phenomenon of pleiotropism refers to:
Ray florets have:
Which stage of meiosis can last for months or years in the oocytes of some vertebrates?
Given below are two statements: One is labelled as Assertion (A) and other is labelled as Reason (R). Assertion (A): During menstrual cycle, the ovulation takes place approximately on 14th day. Reason (R): Rapid secretion of LH in the middle of menstrual cycle induces rupture of Graafian follicle and thereby the release of ovum. In the light of the above statements, choose the most appropriate answer from the options given below.
Select the correct match:
Which one of the following conditions in humans is correctly matched with its chromosomal abnormality/linkage?
In Antirrhinum, two plants with pink flowers were hybridized. The F1 plants produced red, pink, and white flowers in the proportion of 1 red, 2 pink and 1 white. What could be the genotype of the two plants used for hybridization? Red flower colour is determined by RR, and White by rr genes.
How does steroid hormone influence the cellular activities?
Haemophilia is more commonly seen in human males than in human females because:
Chromosomal theory of inheritance was proposed by:
The centriole undergoes duplication during:
A woman has an X-linked condition on one of her X chromosomes. This chromosome can be inherited by:
Axile placentation is present in?
Among China rose, mustard, brinjal, potato, guava, cucumber, onion and tulip, how many plants have superior ovary?
Correct position of floral parts over thalamus in the mustard plant is:
Identify the correct features of Mango and Coconut fruits. (i) In both, fruit is a drupe (ii) Endocarp is edible in both (iii) Mesocarp in Coconut is fibrous, and in Mango, it is fleshy (iv) In both, the fruit develops from the monocarpellary ovary Select the correct option from below:
Which of the following shows whorled phyllotaxy?
The roots that originate from the base of the stem are:
The ovary is half inferior in: