Difference between revisions of "Chromosome"

Latest revision as of 13:47, 1 December 2019

Key Stage 3

Meaning

Chromosomes are coils of DNA found in the nucleus.


This diagram shows how DNA is coiled up to make a chromosome.

About Human Chromosomes

Humans have 46 chromosomes.

Chromosomes come in pairs, one from the father and one from the mother.

23 chromosomes are from the father and 23 chromosomes are from the mother.

The last 2 chromosomes are called sex chromosomes and they determine if the offspring is male or female. If the human has two X Chromosomes then they are female. If the human has an X and a Y Chromosome they are male.

Key Stage 4

Meaning

A chromosome is a section of DNA that has coiled together.

About Chromosomes

Chromosomes are found in pairs in diploid cells.

In organisms which engage in sexual reproduction one of the chromosomes in the pair is inherited from the mother and the other from the father.

During mitosis chromosomes have made copies of themselves that are joined by a centromere.

In haploid cells there are half the number of chromosomes. These cells are gametes used in sexual reproduction.

About Human Chromosomes

Humans have 46 chromosomes.

23 chromosomes are from the father and 23 chromosomes are from the mother.

The last 2 chromosomes' are called sex chromosomes and they determine if the offspring is male or female. If the human has two X Chromosomes then they are female. If the human has an X and a Y Chromosome they are male.

References

@@ Line 1: / Line 1: @@
 ==Key Stage 3==
 ===Meaning===
-[[Chromosomes]] are coils of [[DNA]] found in the [[Cell Nucleus|nucleus]].
+[[Chromosome]]s are coils of [[DNA]] found in the [[Cell Nucleus|nucleus]].
 {| class="wikitable"
@@ Line 7: / Line 7: @@
 |[[File:Chromosomes.png|center|500px]]
 |-
-| style="height:20px; width:500px; text-align:center;" |This diagram shows how [[DNA]] is coiled up to make a [[chromosome]].
+| style="height:20px; width:500px; text-align:center;" |This [[diagram]] shows how [[DNA]] is coiled up to make a [[chromosome]].
 |}
 ===About Human Chromosomes===
-: Humans have 46 chromosomes.
+: Humans have 46 '''chromosomes'''.
-: Chromosomes come in pairs, one from the father and one from the mother.
+: '''Chromosomes''' come in pairs, one from the father and one from the mother.
-: 23 [[chromosome]]s are from the father and 23 [[chromosome]]s are from the mother.
+: 23 '''chromosomes''' are from the father and 23 '''chromosomes''' are from the mother.
-: The last 2 chromosomes are called sex chromosomes and they determine if the [[offspring]] is [[male]] or [[female]]. If the human has two [[X Chromosome]]s then they are [[female]]. If the human has an X and a [[Y Chromosome]] they are [[male]].
+: The last 2 '''chromosome'''s are called sex '''chromosomes''' and they determine if the [[offspring]] is [[male]] or [[female]]. If the human has two [[X Chromosome]]s then they are [[female]]. If the human has an X and a [[Y Chromosome]] they are [[male]].
+==Key Stage 4==
+{{#ev:youtube|https://www.youtube.com/watch?v=IePMXxQ-KWY}}
+===Meaning===
+A [[chromosome]] is a section of [[DNA]] that has coiled together.
+===About Chromosomes===
+: '''Chromosomes''' are found in pairs in [[diploid]] [[Cell (Biology)|cells]].
+: In [[organism]]s which engage in [[Sexual Reproduction|sexual reproduction]] one of the '''chromosomes''' in the pair is [[Heredity|inherited]] from the mother and the other from the father.
+: During [[mitosis]] '''chromosomes''' have made copies of themselves that are joined by a [[centromere]].
+: In [[haploid]] [[Cell (Biology)|cells]] there are half the number of '''chromosomes'''. These [[Cell (Biology)|cells]] are [[gamete]]s used in [[Sexual Reproduction|sexual reproduction]].
+===About Human Chromosomes===
+: [[Human]]s have 46 '''chromosome'''s.
+: 23 '''chromosomes''' are from the father and 23 '''chromosomes''' are from the mother.
+: The last 2 ''chromosomes''' are called sex '''chromosomes''' and they determine if the [[offspring]] is [[male]] or [[female]]. If the human has two [[X Chromosome]]s then they are [[female]]. If the human has an X and a [[Y Chromosome]] they are [[male]].
+===References===
+====AQA====
+:[https://www.amazon.co.uk/gp/product/0008158754/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0008158754&linkCode=as2&tag=nrjc-21&linkId=27ad53b0283feeff7fc5ae04a9e205f155 ''Chromosome, pages 14, 24-2, 35, 41, 208, 212, 236-9, 240, 242-3, 250-1, GCSE Biology; Student Book, Collins, AQA '']
+:[https://www.amazon.co.uk/gp/product/1782945598/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945598&linkCode=as2&tag=nrjc-21&linkId=ad276ad49df77ab4b40ab4fd0fe09772 ''Chromosomes, pages 15, 66, GCSE Combined Science; The Revision Guide, CGP, AQA '']
+:[https://www.amazon.co.uk/gp/product/1782945563/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945563&linkCode=as2&tag=nrjc-21&linkId=9a1d023a374038e6072f33c4f3cf808b ''Chromosomes, pages 15, 84, GCSE Biology; The Revision Guide, CGP, AQA '']
+:[https://www.amazon.co.uk/gp/product/1782946381/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782946381&linkCode=as2&tag=nrjc-21&linkId=5ec5fc3f6429e30c1d9ab9bca2bccf93 ''Chromosomes, pages 33, 34, 204, 213, GCSE Combined Science Trilogy; Biology, CGP, AQA '']
+:[https://www.amazon.co.uk/gp/product/1782945954/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945954&linkCode=as2&tag=nrjc-21&linkId=100574c08fbbb64318256eb79ed61a76 ''Chromosomes, pages 33, 34, 244, 261, GCSE Biology, CGP, AQA '']
+:[https://www.amazon.co.uk/gp/product/1471851362/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851362&linkCode=as2&tag=nrjc-21&linkId=7d78d70a2044ee9982dae010c94af92a ''Chromosomes, pages 34, GCSE Combined Science Trilogy 2, Hodder, AQA '']
+:[https://www.amazon.co.uk/gp/product/1471851354/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851354&linkCode=as2&tag=nrjc-21&linkId=9012a0d354024419214fb3ad5ac44ba0 ''Chromosomes, pages 4, 19-20, 27, GCSE Combined Science Trilogy 1, Hodder, AQA '']
+:[https://www.amazon.co.uk/gp/product/1471851338/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851338&linkCode=as2&tag=nrjc-21&linkId=425855d5890466e47189e1c21b67a1ea ''Chromosomes, pages 5, 19-20, 27, 183-4, 185, GCSE Biology, Hodder, AQA '']
+:[https://www.amazon.co.uk/gp/product/0198359373/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359373&linkCode=as2&tag=nrjc-21&linkId=952a73bbb09d222ecc4b50d200679849 ''Chromosomes, pages 6, 8, 26-27, 198-199, 211, GCSE Biology; Third Edition, Oxford University Press, AQA '']
+:[https://www.amazon.co.uk/gp/product/1782945598/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945598&linkCode=as2&tag=nrjc-21&linkId=ad276ad49df77ab4b40ab4fd0fe09773 ''Chromosomes; X and Y, page 69, GCSE Combined Science; The Revision Guide, CGP, AQA '']
+:[https://www.amazon.co.uk/gp/product/1782945563/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945563&linkCode=as2&tag=nrjc-21&linkId=9a1d023a374038e6072f33c4f3cf808b ''Chromosomes; X and Y, page 90, GCSE Biology; The Revision Guide, CGP, AQA '']
+:[https://www.amazon.co.uk/gp/product/1471851362/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851362&linkCode=as2&tag=nrjc-21&linkId=7d78d70a2044ee9982dae010c94af92a ''Chromosomes; X and Y, pages 40-1, GCSE Combined Science Trilogy 2, Hodder, AQA  '']
+====Edexcel====
+:[https://www.amazon.co.uk/gp/product/1782945741/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945741&linkCode=as2&tag=nrjc-21&linkId=30da4f2178da182547b62a7329d13b57 ''Chromosomes, pages 20, 27, GCSE Combined Science; The Revision Guide, CGP, Edexcel '']
+:[https://www.amazon.co.uk/gp/product/1782946748/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782946748&linkCode=as2&tag=nrjc-21&linkId=a4f0348fc37d0ba1bb52d27f8679581f ''Chromosomes, pages 24, 34, GCSE Biology; The Revision Guide, CGP, Edexcel '']
+:[https://www.amazon.co.uk/gp/product/1292120193/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120193&linkCode=as2&tag=nrjc-21&linkId=572df39392fb4200db8391d98ae6314e ''Chromosomes, pages 4, 26, 40, 42, GCSE Combined Science, Pearson Edexcel '']
+:[https://www.amazon.co.uk/gp/product/1292120207/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120207&linkCode=as2&tag=nrjc-21&linkId=22455ff53961978667722edaa64c0be5 ''Chromosomes, pages 4, 30, 52, 54, GCSE Biology, Pearson, Edexcel '']
+:[https://www.amazon.co.uk/gp/product/1782948120/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782948120&linkCode=as2&tag=nrjc-21&linkId=dedef775c6a43dbb0a609441525adac0 ''Chromosomes, pages 58, 89, GCSE Biology, CGP, Edexcel '']
+:[https://www.amazon.co.uk/gp/product/1292120193/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120193&linkCode=as2&tag=nrjc-21&linkId=572df39392fb4200db8391d98ae6314e ''Chromosomes; replication, page 41, GCSE Combined Science, Pearson Edexcel '']
+:[https://www.amazon.co.uk/gp/product/1292120207/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120207&linkCode=as2&tag=nrjc-21&linkId=22455ff53961978667722edaa64c0be5 ''Chromosomes; replication, page 53, GCSE Biology, Pearson, Edexcel '']
+:[https://www.amazon.co.uk/gp/product/1292120193/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120193&linkCode=as2&tag=nrjc-21&linkId=572df39392fb4200db8391d98ae6314e ''Chromosomes; sex chromosomes, page 48, GCSE Combined Science, Pearson Edexcel '']
+:[https://www.amazon.co.uk/gp/product/1292120207/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120207&linkCode=as2&tag=nrjc-21&linkId=22455ff53961978667722edaa64c0be5 ''Chromosomes; sex chromosomes, page 66, GCSE Biology, Pearson, Edexcel '']
+====OCR====
+:[https://www.amazon.co.uk/gp/product/1782945695/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945695&linkCode=as2&tag=nrjc-21&linkId=ceafcc80bcad6b6754ee97a0c7ceea53 ''Chromosomes, pages 11, 23, 48, 50, Gateway GCSE Combined Science; The Revision Guide, CGP, OCR  '']
+:[https://www.amazon.co.uk/gp/product/1782945660/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945660&linkCode=as2&tag=nrjc-21&linkId=83aa4500ad7759e7f401a1c5ba5df758 ''Chromosomes, pages 12, 15, 28, 66, 68, 71, Gateway GCSE Biology; The Revision Guide, CGP, OCR '']
+:[https://www.amazon.co.uk/gp/product/0198359810/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359810&linkCode=as2&tag=nrjc-21&linkId=d768d99f1a06f7c12fab40e5aef85a55 ''Chromosomes, pages 28, 64-65, 154-155, 161, 163, Gateway GCSE Biology, Oxford, OCR  '']

Difference between revisions of "Chromosome"

Latest revision as of 13:47, 1 December 2019

Contents

Key Stage 3

Meaning

About Human Chromosomes

Key Stage 4

Meaning

About Chromosomes

About Human Chromosomes

References

AQA

Edexcel

OCR