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science final genetics and probibility
science final exam
19
Science
7th Grade
05/21/2012

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Term
Probability is
Definition
the likelihood or the chance that something will happen.
Term
how many hereditary factors are there?
Definition
There are two hereditary factors (genes) for each characteristic. Each parent gives one factor (gene) for each characteristic to each offspring.
Term
The Law of Segregation:
Definition
One allele for each trait is passed down to the offspring by each parent.
Term
The Law of Independent Assortme:
Definition
Factors (genes) for different characteristics are inherited independently of each other. Some factors (genes) are dominant and hide the expression of the recessive form ( allele)
Term
What is a Pure Bred Plant?
Definition
consistently have offspring with the same trait as the parent.
Term
Alleles:
Definition
The different forms of a gene
Term
Dominant Allele:
Definition
The form that always shows in the organism when it is present
Term
Recessive Allele:
Definition
The form that is hidden or masked by the dominant form when it is present.
Term
Independence of Events:
Definition
Each event is a separate entity to which the laws of
Term
Punnett Square:
Definition
A device for predicting the probable offspring of particular parents.
Term
Gametes:
Definition
Sex cells that contain the genes the parents are providing for the offspring.
Term
Cross:
Definition
The mating of two parents
Term
Homozygous:
Definition
Having two alleles with the same expression.
Term
Heterozygous:
Definition
Having two alleles with different expressions. (hybrid)
Term
A Punnett square
Definition
is used to show the possible combinations of gametes.
Term
Phenotype :
Definition
The appearance of the organism. The expression of the genotype
Term
Genotype:
Definition
the genetic makeup of the organism.
Term
What if the flower is white?
Definition
its white ............... duh
Term
A heterozygous
Definition
purple flowered plant with a white flowered plant
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