Answer the following:
1)how many consecutive divisions will take place to produce 16 daughter cells from 1 cell by mitosis cell division ?
2) how many cells will be produced from 1 cell which divides by three consecutive meiosis divisions?
3)what is the unit term of DNA helix?
4)name three components of nucleotide
a)________
b)__________
c)__________
5) write the unit term of chromosome
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Answers
1) The division through mitosis produces 2 cells; 2 cells will result in 4 cells; 4 cells will result in 8; 8 cells will result in 16 cells
It will take 4 consecutive divisions.
2) Meiosis is used to make special cells - sperm cells and egg cells - that have half the normal number of chromosomes. It reduces the number from 23 pairs of chromosomes to 23 single chromosomes. The cell copies its chromosomes, but then separates the 23 pairs to ensure that each daughter cell has only one copy of each chromosome. A second division that divides each daughter cell again to produce four daughter cells. Knowing the pattern of doubling, you should conclude that by the third consecutive division of each daughter cell once again, will produce eight daughter cells.
3) DNA helix is made up of may nucleotides joined together via phosphodiester bond and hydrogen bond. Hence the unit term of DNA helix is nucleotide. Nucleotides are composed of a nitrogenous base, five-carbon sugar and at least one phosphate group.
4) There are just 3 components of nucleotide: nitrogenous base, deoxyribose(sugar) and phosphate group.
5) Deoxyribonucleic Acid
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Answer:
1. it will take four consecutive division
2. 23pairs of chromosome
3. Nucleotide
4.a pentose sugar
b. phosphate
c.nucleic acid
5. deoxyribonucleic acid DNA