Answer:
Advantages and Disadvantages of Vegetative Propagation
ADVANTAGES
Faster and more certain method of propagation.
New individuals produced have exactly identical qualities as their parents. This preserves the characteristics of food and flower crops.
Can be used to reproduce plants that do not have viable seeds.
The flowers produced are of a superior quality.
Certain desirable characteristics present in the fruit can be maintained.
DISADVANTAGES
Does not produce new varieties
Leads to over crowding
Very little dispersal
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Low blood levels of potassium can lead to disturbances in heart rhythm, a leading cause of death among people with eating disorders.
Low blood levels of potassium can lead to disturbances in heart rhythm, a leading cause of death among people with eating disorders. Hyperkalemia, an elevated potassium blood level, can impair the function of skeletal muscles, the nervous system, and the heart. It can result in a partial depolarization (excitation) of the plasma membrane of cardiac cells of the heart, leading to an inability of cells to repolarize. This can cause the heart to seize and stop pumping blood, which is fatal within minutes.
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The comet will die or will recover after it has made several trips around the Sun. the tail of the comet always point away from the sun because the sun’s ray heat up and the solar winds push on the comet and then make the tail.
The heat from the Sun vaporizes most of the frozen ice in the comet. The remaining small particles spread out in the orbit of the comet.
The male human has a sperm cell and the female has an egg cell. The cells from the male and female that combine to form a zygote are called gametes. The human sperm and egg cells each contain 23 chromosomes. . A combination of gametes forms a zygote with 46 chromosomes. The type of cell division that produces gametes with half the normal chromosome number is the meiosis. Meiosis is the type of cell division used in sexual reproduction. It will occur in the testes and ovaries.
The gametes B and C are the ones that contain one or more recombinant chromosomes, option 4 is correct.
Recombinant chromosomes are formed through the process of genetic recombination, where genetic material is exchanged between homologous chromosomes during meiosis. The exchange of genetic material results in new combinations of alleles on the chromosomes.
The B and C gametes are likely to contain recombinant chromosomes because they are a result of the crossing over and recombination that occurs during meiosis. Gamete B is likely to have undergone genetic recombination, as it carries a combination of alleles from both homologous chromosomes. Similarly, gamete C is also likely to contain recombinant chromosomes due to the recombination process.
The other options may not necessarily contain recombinant chromosomes, as they may have inherited intact, non-recombined chromosomes from the parent cells during meiosis, option A is correct.
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The correct question is:
Which of these gametes contains one or more recombinant chromosomes?
1. A and C
2. A and B
3. D and E
4. B and C
5. A and D