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Consider the following statements regarding centromere and choose the correct answer:
1. The position of the centromere is constant for a particular chromosome
2. The structure and function of the centromere are different from that of the rest of the chromosome
3. During division the centromere is functional, while the rest of the chromosome is genetically inactive
4. The position of the centromere varies in different chromosomes
The following coding system shows the letter codes for numbers. Excluding the exceptions mentioned below, the digits in the question are to be transformed into letter codes as follows: Digit 0 1 2 3 4 5 6 7 8 9 Letter Code A B C D E F G H I J Exceptions: i. If a number begins with a nonzero even digit, that digit should be coded as N. ii. If a number begins with a nonzero odd digit, that digit should be coded as P. iii. If a number begins and also ends with non-zero even digits, those two digits at the extreme ends should be coded as Q. iv. If a number begins and also ends with nonzero odd digits, those two digits at the extreme ends should be coded as W. v. If a number's middle digit is a multiple of 2 that digit should be coded as Z. Barring these exceptions, the other digits should be codified as per the above-mentioned letter codes. Find the appropriate code for the following number-group 3214067
Consider the following statements regarding supernumerary chromosomes and choose the correct answer:
1. They are not homologous with any of the normal chromosomes
2. They form synapses among themselves
3. They are generally smaller than normal chromosomes
4. They are found more commonly in plants than in animals
Gaurav cycles towards South-West for a distance of 6 m and stops there. Further, he moves towards East a distance of 10 m and from there he moves towards North-East a distance of 6 m. Next, he moves towards West a distance of 6 m. Now, he moves towards North-West a distance of 2 m. Next, he moves towards West a distance of 4 m and then towards South-West 6 m and stops at that point. Now, where is he from the starting point?
Consider the following statements with regard to the functions of the centromere in the chromosome.
1. Centromeres are the centres of movement of the chromatids or chromosomes during anaphase separation.
2. Acentric chromosomes lack the capacity to segregate in a regular fashion.
3. Crosing-over in one arm of a metacentric chromosome does not affect the crossing over in the arm of the same chromosome.
Which of the statements given above are correct?
Ten boys B1, B2, B3, B4, B5, B6, B7, B8, B9, and B10 are sitting in a row facing towards the north (not necessarily in the same order). Only four boys are towards the left of B9. B6 is fourth to the right of B9. No boys are towards the left of B2. B5 is to the immediate right of B3. B4 is not towards the right of B6 and not towards the left of B9. B1 is second to the left of B7. B7 is third to the right of B2. Only two boys are sitting towards the right of B5. If B5 is to the immediate left of B6, then how many boys are sitting between B10 and B8?
In each diploid set of chromosomes, two homologous chromosomes have additional 'constrictions' called
If the pairing starts at terminal and proceeds towards centre it is known as ________________
10 people - A, B, C, D, E, P, Q, R, S and T are sitting opposite to each other in two different rows. There are five people in each row and facing towards each other. Q is not facing north is sitting opposite to the one who is sitting second to the right of D. S is an immediate neighbour of A but not of Q. P is not sitting at any of the extreme ends. R is facing north and is sitting at one of the extreme ends but not opposite to S. S is sitting in the opposite row of B but is not sitting opposite to D. Only one person is sitting between B and D. D and Q are not sitting at any of the extreme ends. C is sitting second to the right of E and opposite to the one who is an immediate neighbour of D. Who among the following pair is not sitting opposite to each other?
The interchange and fusion of broken ends between two homologous chromosomes is known as