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16 Cards in this Set
- Front
- Back
Chromosomes
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a thread-like structure of nucleic acids and protein found in thenucleus of most living cells, carrying genetic information in the form of genes����������=���
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Complementarybase pairs ����#���
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either of the nucleotide bases linkedby a hydrogen bond on opposite strands of DNA or double-stranded RNA: guanineis the complementary base ofcytosine, and adenine is the complementarybase of thymine in DNA and of uracil in RNA. Expand. Compare base pair.�������#���
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Gene
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a unit of heredity which is transferred from a parentto offspring and is held to determine some characteristic of the offspringn>&nb���>���
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Nucleotide.co���7��z
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a compound consisting of a nucleoside linked toa phosphate group. Nucleotides form the basic structural unit of nucleic acidssuch as DNA¶
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Chromatid.co"zt
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each of the two thread-like strands into which achromosome divides longitudinally during cell division. Each contains a doublehelix of DNA˶
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DiploidNumber ���A��g
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the number of chromosomes present in the body cells of a diploidorganism.������o��P�g
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Haploid NumberLJ
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(of a cell or nucleus) having a single set ofunpaired chromosomes
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HomologousChromosome ����������'R��
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having the same relation, relative position, or structure (of organs)similar in position, structure, and evolutionary origin but not necessarily infunction.����/���
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Meiosis
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a type of cell division that results infour daughter cells each with half the number of chromosomes of the parentcell, as in the production of gametes and plant spores.0,"l���j��
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Mitosis��
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a type of cell division that results intwo daughter cells each having the same number and kind of chromosomes as theparent nucleus, typical of ordinary tissue growth.000,"l���j��
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DNAreplication not n���!S��
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DNA replication is the process by which adouble-stranded DNA moleculeis copied to produce two identical DNA molecules. Replication is an essentialprocess because, whenever a cell divides, the two new daughter cells mustcontain the same genetic information, or DNA, as the parent cell.�����>�
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Karyotype ragmen���,T�g
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picture ofa person’s full set of chromosomes. It consists of 23 homologous pairs ofchromosomes. o���A��
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Allelesml>o(
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Different forms of variations of the same gene eg. Eye colour.+
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Heredity |
Trait that has been passed on by many generations |
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Centromere |
the point on a chromosome by which it is attached to a spindle fibre during cell division.
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sister chromotids |
A sister chromatid refers to either of the two identical copies (chromatids) formed by the replication of a single chromosome
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