2011 0720 mendel father of genetics

Gregor MendelThe Father of Genetics

How are traits passed from one generation to the next?

Is there a pattern?


Parts of a Flower

Stamen

Pollen(sperm)

Parts of a Flower - Male

Pistil

Egg

Parts of a Flower - Female

Stamen

Pollen(sperm)

Pistil

Egg

Pollination

Stamen

Pollen(sperm)

Pistil

Egg

Pollination

Stamen

Pollen(sperm)

Pistil

Egg

Pollination

Egg and sperm join and a new organism grows

Fertilization

Peas form in the pod

Fertilization

Life Cycle of a Pea Plant









Why do you think,

bees are excellent pollinators?

Why do you think,


How else is pollen transferred from the stamen to the pistil?

Why do you think,



Why do you think,



PLANT 1

Self-pollination

Stamen

Pollen(sperm)

PLANT 1

Self-pollination

Pistil

PLANT 1

Self-pollination

Sperm from pollen fertilizes the egg

PLANT 1

Self-pollination

PLANT 2PLANT 1

Cross-pollination

Stamen

Pollen(sperm)

PLANT 2PLANT 1

Cross-pollination

Pistil

PLANT 2PLANT 1

Cross-pollination

Plant 1 pollen fertilizes the egg of Plant 2

PLANT 2PLANT 1

Cross-pollination

How do you think Mendel

cross-pollinated pea plants?



How do you think Mendel

cross-pollinated pea plants?

How did he prevent

self-pollination?

Mendel’s Method

Mendel’s Method

Mendel’s Method

Mendel’s Method

Mendel’s Method

Mendel’s Method

What happens when a short pea plant cross-pollinates with a short pea plant?


SHORT x SHORT

SHORT x SHORT

SHORT x SHORT

100% SHORT

SHORT x SHORT

What happens when a tall pea plant cross-pollinates with a tall pea plant?


TALL x TALL

TALL x TALL

TALL x TALL

TALL x TALL

100% TALL

TALL x TALL

100% TALL

TALL x TALL TALL x TALL

100% TALL


100% TALL


100% TALL


75% TALL, 25% SHORT100% TALL


75% TALL, 25% SHORT100% TALL


P Generation(parental generation)




F1 Generation(first filial)

100% TALL



100% TALL



100% TALL



100% TALL



100% TALL



100% TALL



F2 Generation(second filial)

75% TALL, 25% SHORT

100% TALL



TALL | TALL Short | Short


75% TALL, 25% SHORT

100% TALL


PUREBRED TALLx PUREBRED SHORT



TALL | ShortTALL | Short TALL | Short TALL | Short


75% TALL, 25% SHORT

100% TALL



TALL | Short TALL | Short TALL | Short TALL | Short




75% TALL, 25% SHORT

100% TALL



DOMINANT TRAIT =

TALL | Short



TALL | Short TALL | Short TALL | Short


75% TALL, 25% SHORT

100% TALL



DOMINANT TRAIT = = RECESSIVE TRAIT




75% TALL, 25% SHORT

100% TALL



HYBRID TALL x HYBRID TALL


Short | ShortTALL | TALL TALL | Short TALL | Short


75% TALL, 25% SHORT

TALL | Short




100% TALL



HYBRID TALL x HYBRID TALL




PUNNETT SQUARE

Short | ShortTALL | TALL

DOMINANT TRAIT = TALL = TRECESSIVE TRAIT = Short = tDOMINANT TRAIT = TALL = TRECESSIVE TRAIT = Short = t




PUNNETT SQUARE

Short | Short

T

T

TALL | TALL

DOMINANT TRAIT = TALL = TRECESSIVE TRAIT = Short = t




PUNNETT SQUARE

t t

Short | Short


T

T

TALL | TALL




PUNNETT SQUARE

t t

Short | Short

T

T

TALL | TALL

TALL | Short

T t

=





PUNNETT SQUARE

t t

Short | Short

T

T

TALL | TALL

TALL | Short TALL | Short

T t T t

=





PUNNETT SQUARE

t t

Short | Short

T

T

TALL | TALL


T t T t

T t

=




100% TALL


PUNNETT SQUARE

t t

Short | Short

T

T

TALL | TALL


T t T t

T t T t

=








PUNNETT SQUARE







PUNNETT SQUARE

T

t








PUNNETT SQUARE

T t

TALL | Short


T

t

TALL | Short






PUNNETT SQUARE

T t

T

t


T T

=

TALL | TALL







PUNNETT SQUARE

T t

T

t


T T T t

=

TALL | TALL TALL | Short







PUNNETT SQUARE

T t

T

t


T T T t

t T

=

TALL | TALL TALL | Short TALL | Short







PUNNETT SQUARE

T t

T

t


T T T t

T t

=

TALL | TALL TALL | Short TALL | Short







PUNNETT SQUARE

T t

T

t


75% TALL, 25% SHORT

T T T t

T t t t

=

Short | ShortTALL | TALL TALL | Short TALL | Short


T = Yellow t = Green

T = Yellow t = Green

Date post:	15-Jun-2015
Category:	Education
Upload:	elizabeth-oshana
View:	404 times
Download:	1 times

2011 0720 mendel father of genetics

Education