B1 -You & Your Genes Keywords

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  • Created by: parvati
  • Created on: 15-11-15 17:57
Genes
Sections of DNA that codes for a particular characteristic by controlling the production of a particular protein or part of protein by cells
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Proteins
A type of chemical with important functions in living organisms
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DNA
(deoxyribonucleic acid) A chemical/large polymer molecule found in all of the body cells. Its sequence determines genetic characteristics.
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Chromosones
Thread-like structures in the cell nucleus that carry genetic information. Each chromosome consists of DNA wound around a core of protein
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Genotype
An individual genetic make-up, such as whether they are homozygous or hetrozygous for a particular gene
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Phenotype
A persons observable physical features. The phenotype will depend on the persons genes but also how they interact with the enviroment
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Heterozygous
An individual who has two different alleles for an inherited characteristic
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Homozygous
An individual who has two identical alleles for an inherited characteristic
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Alleles
Different versions of a gene or a pair of chromosomes
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Dominant
The Allele that is always expressed, irrespective of the other Allele in the pair
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Recessive
An allele that is only expressed if the other allele in the pair is also recessive; it is hidden if the other allele is dominant
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Sex Determining Gene
A gene carried on the y sex chromosome that causes a fetus to develop into a male
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Embryo
An organism in the earliest stages of development which began as a zygote and will become a fetus
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Zygote
The cell formed by the fusion of a male and female gamete at fertilisation
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Pre-implantation genetic diagrams (PGD)
Genetic testing of embryos created by IVF for a genetic disorder, so that healthy embryos can be transferred into the mothers uterus
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Genetic Testing
Testing an individual for a genetic disorder
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Genetic Screening
Testing large numbers of individuals for a gene, such as a gene for a genetic disorder
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Asexual Reproduction
Reproduction (creation of offspring) involving only one parent; offspring are genetically identical to the parent
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Clones
Organisms genetically identical to one another
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Stem Cells
Unspecialised body cells that can develop into other speacialised cells
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Speacialised (cells)
A cell that has a particular function
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Other cards in this set

Card 2

Front

A type of chemical with important functions in living organisms

Back

Proteins

Card 3

Front

(deoxyribonucleic acid) A chemical/large polymer molecule found in all of the body cells. Its sequence determines genetic characteristics.

Back

Preview of the back of card 3

Card 4

Front

Thread-like structures in the cell nucleus that carry genetic information. Each chromosome consists of DNA wound around a core of protein

Back

Preview of the back of card 4

Card 5

Front

An individual genetic make-up, such as whether they are homozygous or hetrozygous for a particular gene

Back

Preview of the back of card 5
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