Related Questions

Consider the following statements regarding the significance of mitosis and choose the correct answer:
1. The constant number of chromosomes in all the cells of the body is because of mitosis
2. Mitosis restores the surface-volume ratio of the cell
3. A cell can grow in size to a large extent without disturbing the ratio between the nucleus and the cytoplasm
4. Repair of the body takes place because of addition of cells by mitosis
Consider the following statements regarding aneuploids and choose the correct answer:
1. Aneuploidy may arise by the perpetuation of a cell in which, through a failure of anaphase of mitosis, one or more chromosomes may be lost
2. Aneuploidy in diploids is much less viable than aneuploidy in polyploids
3. In true aneuploids there are complete genomes, plus a fraction of a genome
4. False aneuploids may contain supernumerary chromosomes
Mrs. Carson took a taxi to meet her three friends for lunch. They were waiting for her outside the restaurant when she pulled up in the car. She was so excited to see her friends that she left her tote bag in the taxi. As the taxi pulled away, she and her friends took notice of the license plate number so they would be able to identify the car when they called the taxi company.

#1 : The four women seem to agree that the plate starts out with the letter J.
#2 : Three of them agree that the plate ends with 12L.
#3 : Three of them think that the second letter is X, and a different three think that the third letter is K.

The four license plate numbers below represent what each of the four women thinks she saw. Which one is most likely the license plate number of the taxi?
Consider the following statements.
1. Allosomes, i.e. chromosomes which are responsible for determination of sex e.g. X and Y chromosomes.
2. Autosomes, i.e. chromosomes, which determine the somatic characters.
Which of the statement(s) given above is/are true?
The stage of mitosis at which chromatids separate as independent chromosomes is the
Consider the following statements.
1. Human beings have 23 pairs of chromosomes.
2. Sex chromosome in human male are named XY.
3. Chromosomes are best seen in metaphase.
Which of the statements given above is/are false about chromosomes?
Assertion (A) Human beings have 23 pair of chromosomes, one of which is the sex chromosomes and the remaining are 22 autosomes. The X-linked disease are related to mutation on a sex chromosomes.
Reason (R) Colour blindness results from a mutation in X-chromosome.
Of the two diploid species, species I has 36 chromosomes and species II has 28 chromosomes. How many chromosomes would be found in an allotriploid individual?
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
Read the passage carefully and choose the best answer to each question out of the four alternatives.
Eight north Indian Ocean countries, namely, Bangladesh, India, the Maldives, Myanmar, Oman, Pakistan, Sri Lanka and Thailand, were asked to contribute names so that a combined list could be compiled. Each country gave eight names and a combined list of 64 names was prepared. This list is currently in use, and all cyclones arising in the north Indian Ocean are named from this list, with one name from each country being used in turn. Almost 38 or 39 names from the list have been used up, but since many cyclones dissipate long before they hit land, their names rarely figure in the papers or other media. The names that people do know about, and remember are, naturally, those that were most destructive ones, or very recent. Aila, in 2009 is remembered with a shudder for the enormous destruction it caused in West Bengal and Bangladesh; Phaillin, also for the damage it caused when it hit the Odisha coast in 2013. Two harmless cyclones, which also might remain in peoples memory, are the more recent ones of 2014 — Hudhud, which threatened the east coast of India and Nilofar, which was expected to, but did not, devastate the western coast. The names in the cyclone list are usually words one associates with storms; words which mean water or wind or lightning in various national languages. Sometimes they are names of other things — birds or flowers or precious stones. The name Aila, contributed by the Maldives means fire, the name Phaillin from Thailand means sapphire, the name Hudhud from Oman is the name of a bird, probably the hoopoe, and the name Nilofar, given by Pakistan, is the Urdu name of the lotus or water lily. The eight names suggested by India, and which are in the list of 64, are Agni, Akaash, Bijli, Jal, Leher, Megh, Sagar and Vayu, meaning in that order, fire, sky, lightning, water, wave, cloud, sea and wind. Five of these names (that is, up to Leher) have been used so far.
For the next cyclone if it is the turn of an Indian name to be chosen, then what will be that name?