==========================================================
BIOLOGY STUDY GUIDE: HEREDITY
==========================================================
TOPIC: PRINCIPLES OF INHERITANCE AND VARIATION
LEVEL: SECONDARY / HIGH SCHOOL (CBSE, IGCSE, IB, AP BIO)
CATEGORY: GENETICS
----------------------------------------------------------
CONTENT OVERVIEW:
----------------------------------------------------------
• DEFINITION OF HEREDITY AND INHERITED VS. ACQUIRED TRAITS.
• GREGOR MENDEL: THE FATHER OF GENETICS.
• WHY PISUM SATIVUM? (SELECTION OF THE GARDEN PEA PLANT).
• THE 7 CONTRASTING TRAITS OF PEA PLANTS.
• DETAILED ANALYSIS OF MONOHYBRID & DIHYBRID CROSSES.
• LAWS OF INHERITANCE:
1. LAW OF DOMINANCE
2. LAW OF SEGREGATION
3. LAW OF INDEPENDENT ASSORTMENT
• PUNNETT SQUARE ANALYSIS (F1 AND F2 GENERATIONS).
• SEX DETERMINATION IN HUMAN BEINGS.
• KEY TERMINOLOGY: GENOTYPE, PHENOTYPE, ALLELES, HOMOZYGOUS,
AND HETEROZYGOUS.
----------------------------------------------------------
FEATURES:
- CLEAN, STRUCTURED DIGITAL TRANSCRIPTION OF HANDWRITTEN NOTES.
- ACCURATE GENETIC RATIOS (3:1 AND 9:3:3:1).
- VISUAL DESCRIPTIONS OF GENETIC CROSSES.
----------------------------------------------------------
, NOTES
BIOLOGY
Topic - Heredity (Class - 1)
Heredity (inheritance):
It is the process of having traits (characteristics) from parents to offspring
(progeny).
Types of Traits
1. Inherited Trait
- The trait that passed from parents to children.
- Ex: hair colour, eye colour, shape of earlobes, etc.
2. Acquired Traits
- The trait that is acquired in a lifetime by an individual.
- Ex: - Gaining knowledge
- building muscles
- Acquired traits do not include gene concept.
[Diagram Note: This section contains two hand-drawn sketches of ears labeled
"Detached earlobes" and "Attached earlobes".]
Q. On what basis were the characteristics passing from parents to offspring?
Ans: Gregor Mendel is called the father of genetics. Genetics is a branch of biology
that deals with the study of heredity.
, NOTES
FATHER OF INHERITANCE
↓
GREGOR MENDEL
-> HE DISCOVERED THE LAW OF INHERITANCE PRINCIPLES OF HEREDITY.
-> IT TELLS ENTIRE THINGS ABOUT HEREDITY.
HOW DID HE DISCOVER THE LAW OF INHERITANCE?
- BY DOING LOTS OF EXPERIMENTS ON GARDEN PEA PLANT.
WHY DID MENDEL SELECT GARDEN PEA PLANT FOR HIS EXPERIMENTS?
- GARDEN PEA PLANT -> PISUM SATIVUM
BCS:- 1) LESSER LIFE SPAN
2) MANY GENERATIONS CAN BE OBSERVED AND STUDIED.
3) EASY TO GROW
4) IT SHOWS 7 CHARACTERS.
7 CHARACTERISTICS OF GARDEN PEA PLANT
(IN NEXT PAGE)
BIOLOGY STUDY GUIDE: HEREDITY
==========================================================
TOPIC: PRINCIPLES OF INHERITANCE AND VARIATION
LEVEL: SECONDARY / HIGH SCHOOL (CBSE, IGCSE, IB, AP BIO)
CATEGORY: GENETICS
----------------------------------------------------------
CONTENT OVERVIEW:
----------------------------------------------------------
• DEFINITION OF HEREDITY AND INHERITED VS. ACQUIRED TRAITS.
• GREGOR MENDEL: THE FATHER OF GENETICS.
• WHY PISUM SATIVUM? (SELECTION OF THE GARDEN PEA PLANT).
• THE 7 CONTRASTING TRAITS OF PEA PLANTS.
• DETAILED ANALYSIS OF MONOHYBRID & DIHYBRID CROSSES.
• LAWS OF INHERITANCE:
1. LAW OF DOMINANCE
2. LAW OF SEGREGATION
3. LAW OF INDEPENDENT ASSORTMENT
• PUNNETT SQUARE ANALYSIS (F1 AND F2 GENERATIONS).
• SEX DETERMINATION IN HUMAN BEINGS.
• KEY TERMINOLOGY: GENOTYPE, PHENOTYPE, ALLELES, HOMOZYGOUS,
AND HETEROZYGOUS.
----------------------------------------------------------
FEATURES:
- CLEAN, STRUCTURED DIGITAL TRANSCRIPTION OF HANDWRITTEN NOTES.
- ACCURATE GENETIC RATIOS (3:1 AND 9:3:3:1).
- VISUAL DESCRIPTIONS OF GENETIC CROSSES.
----------------------------------------------------------
, NOTES
BIOLOGY
Topic - Heredity (Class - 1)
Heredity (inheritance):
It is the process of having traits (characteristics) from parents to offspring
(progeny).
Types of Traits
1. Inherited Trait
- The trait that passed from parents to children.
- Ex: hair colour, eye colour, shape of earlobes, etc.
2. Acquired Traits
- The trait that is acquired in a lifetime by an individual.
- Ex: - Gaining knowledge
- building muscles
- Acquired traits do not include gene concept.
[Diagram Note: This section contains two hand-drawn sketches of ears labeled
"Detached earlobes" and "Attached earlobes".]
Q. On what basis were the characteristics passing from parents to offspring?
Ans: Gregor Mendel is called the father of genetics. Genetics is a branch of biology
that deals with the study of heredity.
, NOTES
FATHER OF INHERITANCE
↓
GREGOR MENDEL
-> HE DISCOVERED THE LAW OF INHERITANCE PRINCIPLES OF HEREDITY.
-> IT TELLS ENTIRE THINGS ABOUT HEREDITY.
HOW DID HE DISCOVER THE LAW OF INHERITANCE?
- BY DOING LOTS OF EXPERIMENTS ON GARDEN PEA PLANT.
WHY DID MENDEL SELECT GARDEN PEA PLANT FOR HIS EXPERIMENTS?
- GARDEN PEA PLANT -> PISUM SATIVUM
BCS:- 1) LESSER LIFE SPAN
2) MANY GENERATIONS CAN BE OBSERVED AND STUDIED.
3) EASY TO GROW
4) IT SHOWS 7 CHARACTERS.
7 CHARACTERISTICS OF GARDEN PEA PLANT
(IN NEXT PAGE)
