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Genctic Definition Flash Cards
Defing words from the chapter of Genectics
21
Biology
9th Grade
04/16/2013

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Term
Gene
Definition
Heriditary unit that is transferred from parents to their offspring.
Term
Chromosome
Definition
It is a structure of nucleic acids and proteins that are located in the nucleus.
Term
Allele
Definition
Located in the chromosome that is arise by mutations and is 1 or 2 forms of a gene.
Term
Genotype
Definition
Genectic make up of a organism.
Term
Phenotype
Definition
Name for a trait that is  dominant that you can physically see. 
Term
Gamete
Definition
A mature  male or female germ cell that is able to unite with another of the opposite sex in sexual reproduction to form a zygote.
Term
Punette Square
Definition
A diagram that is used to tell you the outcome of cross breeding in a experiment and the genectics cross breeding.
Term
Random Segregation
Definition
It occurs during the process of meiosis when 2 chromosomes are distributed to the gamete.
Term
Crossing Over
Definition
When 2 Homologous chromosomes come together during meiosis
Term
Independent Assortment
Definition
The alleles independently assort of 1 another during the process called gamete.
Term
Fertilization
Definition
The process of fertilizing a egg,animal or a plant.
Term
Zygote
Definition
A cell resulting from the fusion of two haploid gametes; a fertilized ovum.
Term
Dominant
Definition
The gene that is more likely to be seen and expressed than a recessive gene
Term
Recessive
Definition
Where the gene that is not tangible or seen
Term
Homozygous
Definition
An organism that has 2 identical alleles from a trait
Term
Heterozygous
Definition
An organism that has different alleles
Term
Autosomal Inheritance
Definition
An abnormal gene or mutation that you get from a parent to inherit diseases.
Term
X-Linked Inheritance
Definition
A hereditary pattern that a recessive gene on the X chromosome
Term
Complete Dominance
Definition
When the presence of one allele ensures that the trait of the other allele
Term
Codominance
Definition
When two gene's traits mingle and turn into a different trait
Term
Incomplete Dominance
Definition
 A form of intermediate inheritance in which one allele for a specific trait is not completely dominant over the other allele
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