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Chapter 5 Heredity
Monday Feburary 7th
26
Science
7th Grade
02/04/2011

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Cards

Term

 

 

 

 

Alleles

 

Definition
One of the alternative forms of a gene
Term

 

 

 

Genes

Definition
One set of instructions for an inherited trait
Term

 

 

 

 

Recessive trait

Definition
A trait that reappears in the 2nd generation
Term
Dominant trait
Definition
The trait observed in the first generation when parents that have different traits are bred
Term
Traits
Definition
A genetically determined characteristic
Term
Characteristics
Definition
A feature that has different forms
Term
Characteristic
Definition
A feature that has different forms in a population
Term
Self pollination
Definition
Has both male and female reproductive structures
Term
Cross pollination
Definition
Pollen from one plant fertilizes the ovule of a flower on a different plant.
Term
Heredity
Definition
The passing of genetic traits from parent to offspring
Term
Phenotype
Definition
An organisms appearance
Term
Genotype
Definition
The entire genetic makeup of an organism
Term
Punnet square
Definition
To organize all the possible combinations of offspring from particular parents
Term
Probability
Definition
The likelihood that a possible future event will occur in any given instance of the event
Term
Incomplete dominance
Definition
Each allele has its own degree of influence
Term
Meiosis
Definition
A process in cell division during which the number of chromosomes decrease to half
Term
Homologous chromosome
Definition
Chromosomes that have the same sequence of genes
Term
Sex chromosomes
Definition
One of the pair of chromosomes that determine the sex of an individual
Term
Sex linked disorders
Definition
The genes for certain disorders
Term
Pedigree
Definition
A diagram that shows the occurance of a genetic trait in several generations of a family
Term
DNA
Definition
A molecule that is present in all living skills
Term
Nucleotide
Definition
In a nucleic-acid chain, a subunit that consists of a sugar, a phosphate and a nitrogenous base
Term
Adenine
Definition
Nitrogen base
Term
Thymine
Definition
Nitrogen base
Term
Guanine
Definition
Nitrogen base
Term
Cytosine
Definition
Nitrogen base
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