Inheritance

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Inheritance

Variation

Types of discontinuous varation

eye colour

foot size

skin colour

types of continuous variation

weight

hand span

hair length

What is inheritance

chromosomes

x y

male

x x

female

23

46

two matching sets

threadlike x structure found on the nucleus of a livong cell

dominant

stringer allele

recessive

weaker allele

Homozygous and Hetrozygous

when an organism has 2 different forms of a gene its genotype is said to be hetrozygous and is not true breeding

when an organism possesses 2 identical forms of a gene, its genotype is said to be Homozygous and true breeding

F1 & F2

First and secongd generation

true breeding

an organism that has either two recessive or dominant alleles

breeding experiment involving two different allels of one gene

monohybird

Drosphila

scientific name for fruit flies

commonly used in gentic experiments

Phenotype

appearance

this comes from certain gentic info inherited from parents

family trees help us look at this

tongue rolling

eye colour

hair colour

height

Inherited Characteristics

gentic info from partents

two pieces

Sex cell production

gametes