755713
Descripción
Fichas por Adam Collinge, actualizado hace más de 1 año
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Creado por Adam Collinge
hace más de 10 años
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| Pregunta | Respuesta |
| Why do gametes only have one copy of each chromosome? | So you can combine one sex cell with another and still end up with the right amount of chromosomes |
| How many chromosomes do each gamete have? | 23 |
| What is meiosis? | The production of cells which have half the normal umber of chromosomes |
| What is the first stage of meiosis? | The cell duplicates its DNA- one arm of each chromosome is an exact copy |
| What is the second stage of meiosis? | The first division. The chromosome pairs line up in the center of the cell |
| What is the third stage of meiosis? | The pairs are then pulled apart sp each new cell only has one copy of each chromosome. Some of both parents chromosomes go into each cell |
| What is the fourth stage of meiosis? | The second division, in which the cells line up against the center of the cell. The arms of the chromosomes are then pulled apart |
| What is the product of meiosis? | you get four gametes each with only a single set of chromosomes in it |
| Draw meiosis |
Image:
Meiosis (image/png)
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