B5 genes inheritance and selection

What's inheritance

The process by which genetic informationis passed down from parent to child

What's an allele

Different version of same gene

What's a phenotype

Physical characteristics from genotype

What's a genotype

Combination of alleles an individual has for a particular gene

Dominant allele needs how many copies

One

How many copies are needed for a recessive allele

Two

What's homozygous

Two identical alleles for a gene

What's hetrozygous

Two different alleles for a gene

What's a gamete

Sex cell

How many chromosone’s in a sex cell

23

What do chromosomes contain

Genetic information

Where is genetic information stored

Nucleus

What's the first step of meiosis

Replicate DNA

What's the 2nd step of meiosis

Chromosone pairs line up along the centre

What's the 3rd step of meiosis

Cell split and randomly distributed

What's the 4th step of meiosis

Cells are pulled up again by arms

What's different from the start and end of meiosis

Every cell is genetically unique

What's a mutation

Change in DNA sequence