These presentation covers heredity, mendel's brief story, mendel's first experiment, and mendelian law of inheritance.I also included assessment. I hope that I can help you, as much as I was. :D <3

2. •Why do children look like
their parents?
•Why do brothers and
sisters resemble each
other?
Some children, however,
look unlike any of the
assembled relatives and
more like a great, great
grandparent.

3. What causes the similarities
and differences of appearance
and the skipping of
generations?

4. Passing of traits
from parents to
children is the
basis of Heredity.
Genetics is the
study of

5. Genetics Vocabulary! :DD
Punnette Square is a diagram used to solve
genetics problems.
Genotype is the genetic make up of an individual
(e.g. BB, Cc or dd).
Phenotype is the appearing of a trait (e.g. tall
pea plant).
Alleles are alternative forms of the same gene
(e.g. Blue and Brown Eyes).
Homozygous means two identical alleles (e.g.
BB or bb).
Heterozygous means two different alleles (e.g.
Bb).

6. A Monk Fairytale

7. A Monk Fairytale
Long-long years ago… people did
not understand how traits were
inherited, but there were many
guesses based on things that could
be observed.
Some believes that inheritance is
“blending of traits” of two parents,

8. Some says, that certain
particulates were passed on
from parents to offspring.
While others consider semen as
“highly purified” --- and started
to call relatives as bloodlines.

9. …a time on 1860’s in an Austrian
Monastery, there lived a monk
named Johann Mendel.
Johann’s parents were small
farmers who made financial
sacrifices to pay for his
education.

10. He did well enough at high
school to make it, aged 18, to the
University of Olomouc in 1840.
He took courses in physics,
mathematics and philosophy.

11. Aged 21, and in financial difficulty,
one of his teachers, advised
Johann to join the Abbey of St.
Thomas in Brünn as a monk.
The Abbey actually had a good
reputation for its teaching of
sciences, and its director, was
particularly interested in heredity
of traits in plants and animals on
farms.

12. On joining the Abbey, he took the
name Gregor.
And so… he continue studying
science, while ensuring he could
get by financially.

13. Mendel spent his extra time
thinking about the Lottery of
Fertilization.
Instead of working with humans
he worked with his pea plants.
Why Peas?

14. Mendel spent allot of time
crossing pea plants.
He crossed pea plants over and
over and over again.
As he did, he noticed difference
from one set of pea plants to
next.

15. Mendel’s First Experiment
The term monohybrid comes
from prefix mono which means
“one”.
In Mendel’s experiment the two
parent pea plants differentiate by
just a single trait. He focused in
height first!

16. Mendel’s First Experiment

17. Mendel’s First Experiment

18. We’ll discover that with our
next activity! 

19. Criteria for Group Activity
Work Content 40%
Creativity 20%
Teamwork 20%
Presentation/
Clarity of
Information
20%
TOTAL 100%

20. Mendel discovered different Laws that
explained factors affecting heredity:
1. The Principle of Dominance and
Recessiveness - one trait is masked or covered up
by another trait.
• 2. Principle of Segregation - the two factors
(alleles) for a trait separate during gamete
formation.
• 3. Principle of Independent Assortment -
factors of a trait separate independently of one
another during gamete formation; another way to
look at this is, whether a flower is purple has
nothing to do with the length of the plants stems -
each trait is independently inherited.

21. Quiz!
Direction: In ½ crosswise, provide answers that
are being asked in each item.
PART1: For each genotype, indicate whether it is
heterozygous (HE) or homozygous (HO).
1. AA ____
2. Bb ____
3. cc ____
4. Dd ____

22. For each of the genotypes below, determine the
phenotype.
Purple flowers are dominant to white flowers
5. PP ___________________________
6. Pp ___________________________
7. pp ___________________________
For each phenotype, list the genotypes.
(Remember to use the letter of the dominant
trait)
Straight hair is dominant to curly.
8. ____________ straight
9. ____________ straight
10. ____________ curly

23. Thank You for Listening!
Reported by: Mariannie Dela Rosa