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ddd [48]
3 years ago
13

Why are alpha rays much more dangerous when the source of radiation is located inside the body?

Biology
1 answer:
Afina-wow [57]3 years ago
4 0
Because alpha ray can penatrate the body deeper than other x rays and do more damage

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The female gametophyte develops in the ovule from diploid (2n) tissue that undergoes meiosis and eventually forms the haploid (n
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Megasporangium  tissue gives rise to the female gametophyte.

<h3>What is the name of the diploid tissue that gives rise to the female gametophyte?</h3>
  • Three of the four haploid megaspores worsen into antipodal cells interior the female gametophyte.
  • The central cell of the female gametophyte contains two cores that when fertilized gotten to be the endosperm.
  • Megasporogenesis alludes to the advancement of megaspores from the megasporocyte, the cell that experiences meiosis.
  • Meiosis of the megasporocyte core comes about within the arrangement of four haploid megaspore cores.
  • In most taxa, meiosis is taken after by cytokinesis, coming about in four megaspore cells.
  • This design is named monosporic megasporogene - sis; since of the four megaspores delivered, as it were one of them contributes to the female gametophyte

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brainly.com/question/1553953

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Which summary best explains the mechanisms that control the cell cycle in multicellular
ivann1987 [24]

Answer:

The correct answer is internal and external signals regulate the progression of the cell cycle at various critical check points.

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The cyclic event that helps to prepare the cell for division is termed as cell cycle.Cell cycle are regulated by various internal and external factors which regulates the passage of cell through various critical check point.

 For example Maturation promoting factor helps in the progression of frog egg oocytes cells from G2 to M phase.

    G1 cyclin CDK helps in the passage of cell from G1 to S phase.

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