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Traits of Offsprings
Offsprings inherit new combimations of genes which leads to variations in their traits
Gene codes for traits
Are linked together into a long strand called chromosome
Some traits are controlled by a single gene
but many traits are controlled by several genes working together
Genes are a part of what?
What is a Chromosome?
DNA wrap up w/ proteins coiled together
Homozygous gene pairs are called what
Alleles are what?
Homozygous that are identical gene pairs like AA or aa
gene pairs that are not identical.. Aa
Dominant genes are expressed with what
Recessive genes are not expressed when
the pair is dominant little....a
Is a nuclear division that reduces the cromosome number by half 2(n) equals n
Two stages of meiosis
Crossing over & ramdom aligment, allows for most of the varation in meiosis
allows swapping of genes between maternal & paternal like homologous chromosomes.
breaks up the old codes and makes new ones for offsprings
allows different combos of maternal & paternal chromosomes .
different combos of traits are passed to offsprings
Gametes sex cells(n) include :sperm,eggs, isogametes ect..
Fertillization between two (n) gametes
Restores the parental chromosome number (2n) for a new genetic individual
Neither gene in the pair are dominate.
causes a intermediate physical appearance
Treatment of genetic disorders
1) Diet modification 2) Surgical reconstruction 3) Genetic counselling 4) Pre-natal diagnosis
5) Replacement Therapy 6) Biotechnology
avoidance of allergy foods
Surgery is used to correct physical apperance
Determine potential genetic trait in furture offspring