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INHERITANCE - Coggle Diagram
INHERITANCE
key terms
homozygous
heterozygous
genes
alleles
phenylketonuria
caused by recessive allele
mutation in allele
in gene that codes for enzyme that converts phenylalaline to tyrosine
individual has to be homozygous recessive to have PKU
gregor mendel and his pea plants
law of segregation - no blending of traits
crossed tall and dwarf together
law of dominance - all produced were tall
traits
genotype only
blood group
genetic conditions - cystic fibrosis, colour blindness
environment only
learned behaviour
acquired physical traits
interaction between genotype and environment
height
cancer
phenotypic plasticity
due to environment and not genes
ex - effects of dieting and exercise
can be reversible
SNPs
single nucleotide polymorphisms
single nucleotides that differ from the regular base sequence
if present in coding region of a genome - can alter the AA being produced
pollination
pollen - male gametes
ovaries - female gametes
dominance
homozygous dominant
heterozygous
incomplete dominance vs codominance
incomplete dominance - intermediate phenotype produced
mirabilis jalapa - alleles are red and white but flowers produced are pink
codominance - dual phenotype, ex - AB blood type
conditions for mendel's 2nd law
genes on different chromosomes
genes far apart enough on one chromosome for recombination rates to reach 50%
why science doesn't support incest <3
recessive disorders become more common with interbreeding
polygenic inheritance
2 or more genes influence inheritance of a trait
how meiosis influences inheritance
random orientation of chromosomes during metaphase