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Genitics (Chromosomes very tightly coiled DNA (2 types (Autosomes (44 in…
Genitics
Chromosomes
very tightly coiled DNA
46 in a human body cell (
Diploid
) 2n (Allele)
23 each parents (
Haploid
) n
female: XX Male: XY
A Gene is a sequence of nucleotide which form a chromosome .
long moleclue of tightly coiled DNA
2 types
Autosomes
44 in our cells
zygote
Sex chromosomes
2 in our cells XY, XX
Gametes / haploid
sperm
ova
Karyotype
A picture of someone chromosomes
DNA
(two strands) molecular blueprint for all living things
RNA (one strand)
Cytoplasm
Rybosomes
Protein
Organism
function
carry information for functioning of organism
structure
double helix,
vertical strands- alternating sugars and phosphates
ladder runs- nitrogen bases
Adenine • Thymine • Cytosine • Guanine
Strands called nucleotids
nucleotide are building block of DNA
Family genes
Punnet square
pedigree chart
genotype
what genes are present eg. BB, bb, Bb
phenotype
what you can see eg. bond hair
Meiosis & Mitosis
Meiosis
diploid to haploid
'My O's'
2n
n
n
n
n
Mitosis
Replicates the cells (2n) (identical)
'my toes'
2n
2n
2n
daughter cells
PMAT
