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16 Cards in this Set

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Chromosomes
a thread-like structure of nucleic acids and protein found in thenucleus of most living cells, carrying genetic information in the form of genes����������=���
Complementarybase pairs ����#���
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.�������#���
Gene
a unit of heredity which is transferred from a parentto offspring and is held to determine some characteristic of the offspringn>&nb���>���
Nucleotide.co���7��z
a compound consisting of a nucleoside linked toa phosphate group. Nucleotides form the basic structural unit of nucleic acidssuch as DNA¶
Chromatid.co"zt
each of the two thread-like strands into which achromosome divides longitudinally during cell division. Each contains a doublehelix of DNA˶
DiploidNumber ���A��g
the number of chromosomes present in the body cells of a diploidorganism.������o��P�g
Haploid NumberLJ
(of a cell or nucleus) having a single set ofunpaired chromosomes
HomologousChromosome ����������'R��
having the same relation, relative position, or structure (of organs)similar in position, structure, and evolutionary origin but not necessarily infunction.����/���
Meiosis
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��
Mitosis��
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��
DNAreplication not n���!S��
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.�����>�
Karyotype ragmen���,T�g
picture ofa person’s full set of chromosomes. It consists of 23 homologous pairs ofchromosomes. o���A��
Allelesml>o(
Different forms of variations of the same gene eg. Eye colour.+

Heredity

Trait that has been passed on by many generations

Centromere

the point on a chromosome by which it is attached to a spindle fibre during cell division.

sister chromotids

A sister chromatid refers to either of the two identical copies (chromatids) formed by the replication of a single chromosome