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24 Cards in this Set
- Front
- Back
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What is Heredity?? |
The process by which genetic information is transmitted from generation to generation |
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Where are and what do chromosomes do?? |
They are found in the nucleus if a cell and carry genes |
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What are chromosomes made up of?? |
DNa |
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What is a gene?? |
A small packet of information that controls as certain characteristic. Its formed of a section of DNA |
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What is DNA?? |
It is genetic code that determines the formation of proteins in the body |
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How many chromosomes does a body have?? |
23 pairs (46 in total) |
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What is a gamete?? |
A sperm or egg |
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How many chromosomes does a gamete cell have? |
23 in total, no pairs |
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What is mitosis?? |
The division of body cells which make genetically identical cells |
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How many chromosomes does a body have?? |
23 pairs (46 in total) |
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What is meiosis?? |
The division of gamete cells to create genetically different crlls |
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What is meiosis?? |
The division of gamete cells to create genetically different crlls |
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Whats in the cell cycle?? |
There are 3 stages and the genetic material doubles |
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Stage one of the cell cycle |
Longest stage Cells enlarge |
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Stage one of the cell cycle |
Longest stage Cells enlarge |
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Stage 2 of the cell cycle |
Mitosis occurs - when one set of chromosomes are pulled to each end of the cell |
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Stage one of the cell cycle |
Longest stage Cells enlarge, increase the number of sub-cellular structures and forms two copies of each chromosome |
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Stags 3 of cell cycle |
The whole cell divides to form two identical daughter cells. |
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Stage one of the cell cycle |
Longest stage Cells enlarge, increase the number of sub-cellular structures and forms two copies of each chromosome |
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Stags 3 of cell cycle |
The whole cell divides to form two identical daughter cells. |
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During stage three of the cell cycle, what happens as cells divide?? |
As cells divide and develop, they differentiate and become suited to a particular function |
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What are the two main sources of stem cells? |
An embryo (embryonic stem cells) and adult tissue (adult stem cells) |
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What is a stem cell?? |
A stem cell is an unspecialised cell that can become any type of cell needed |
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What can stem cells from meristems be used for?? |
They can be used for cloning plants for research, agriculture and horticulture. |
