Genes and Inheritance Review

Slides:

Advertisements

Similar presentations

Biology 12. These are crosses that involve genes for two different characteristics.

Advertisements

The Law of Independent Assortment

Vocabulary Get the definitions for the following terms from your text:

Pure Breeding Parent Purple (I 1 I 1 ) and Starchy (TT)

Genetics Unit. Genetics = the field of biology devoted to understanding how characteristics are transmitted from parents to offspring Heredity = the transmission.

Co- Dominance In most situations (and all of Mendel’s experiments) one allele is completely dominant over the other, so there are just two phenotypes.

Fundamentals of Genetics (chapter 9). Who was Gregor Mendel? ~An Austrian monk that is considered to be the “father of genetics” ~Used pea plants for.

Genotype vs Phenotype Genotype: An organism’s genetic makeup which consists of the alleles that an organism inherits from it’s parents (ex: Ee, EE, or.

Punnett Squares; #3 & #4.

Genetics. Heredity Passing of genetic traits from parent to offspring Gregor Mendel discovered the principles of heredity while studying pea plants (“Father.

SBI 3U Incomplete Dominance Codominance. Mendel’s experiments illustrate complete dominance - offspring always resembled one of the two parents The dominant.

Monohybrid Crosses These crosses involve one pair of contrasting traits. There are 5 different types which we will discuss.

Mendelian Genetics Review! Genetic Terms: P = parental generation of a cross F1 = (first filial) the first generation after the parental (the results of.

BEYOND MENDEL’S LAWS Heredity. Incomplete Dominance Review:  Inherited traits were either dominant or recessive  The dominant allele in an individual.

 Genetics – the scientific study of heredity  Why the garden pea?  Easy to grow  Produce large numbers  Mature quickly  Reproductive organs in same.

Genes that are located on the sex chromosomes are sex-linked genes. In mammals, individuals with two X chromosomes, an XX genotype, are females. Individuals.

1 200 pt 300 pt 400 pt 500 pt 100 pt 200 pt 300 pt 400 pt 500 pt 100 pt 200 pt 300 pt 400 pt 500 pt 100 pt 200 pt 300 pt 400 pt 500 pt 100 pt 200 pt 300.

Monohybrid Crosses Vs. Dihybrid Crosses MENDELIAN GENETICS.

Understanding Inheritance Essential Question: What determines the expression of a trait? How can inheritance be modeled?

Unit 2 Mendel and Heredity. 1. Passing of traits from parent to offspring 2. Two forms of a gene are called this 3. The physical appearance of an organism.

04/10/12 1.What does heterozygous mean? 2.What does homozygous mean? 3.What is a phenotype? 4.What is a genotype? 5.What three genotypes can an organism.

Co- dominance WALT That some alleles show incomplete dominance That some alleles show co-dominance.

Mendel and Monohybrid inheritance Describe the work of Gregor Mendel Describe monohybrid inheritance using punnett square diagrams.

Chapter 8 Heredity.

Monohybrid Crosses.

Mendel, Heredity and Punnett Squares

CHAPTER 9 Human Genetics

Performance Indicator 7.L.4A.3

Mendelian Exceptions (Non Mendelian Traits)

Mendelian Exceptions (Non Mendelian Traits)

10.1 Mendel’s Laws of Heredity

Complex Patterns of Inheritance

5.2- Studying Genetic Crosses

Or what happens when you look at 2 traits at the same time

STUDYING HEREDITY Punnett Squares – a diagram that predicts the outcome of a genetic cross by considering all possible combinations of gametes in the.

Inheritance and HEREDITY = Genetics

Non-Mendelian Genetics

Notes – Punnett Squares

Incomplete Dominance & Codominance

Mendel’s Laws of Heredity

Mendel’s Laws of Heredity

Incomplete and Co dominance

Ex. Red and white flower produce pink offspring

Single Factor Punnett Squares

Genetics Notes Chapter 13.

Mendel’s Laws of Heredity

Human Genetics Pp

Mendelian Genetics.

Mendelian Inheritance I 17 October, 2005 Text Chapter 14

Complete Dominance Pattern of Inheritance and Punnett Squares

Mendel’s Laws of Heredity

Monohybrid Genetics Gregor Mendel

Incomplete Dominance & Codominance

4/11/ 12 Bell Ringer What does incomplete dominance mean?

Incomplete Dominance & Codominance

Incomplete Dominance.

Mendel’s Laws of Heredity

Bio Do Now What is the relationship between alleles, genotype, and phenotype? Write down an example of a genotype that is: Homozygous dominant Homozygous.

11.2 Applying Mendel’s Principles

Genetics Test Review.

Complete, Incomplete & Co-Dominance

Punnet Squares Continued….

Punnett Squares Standard

Mendel’s Laws of Heredity

Mendel’s Laws of Heredity

Introduction to Genetics

STUDYING HEREDITY Punnett Squares – a diagram that predicts the outcome of a genetic cross by considering all possible combinations of gametes in the.

Co-dominance and Incomplete Inheritance

Looking at incomplete and codominance

Presentation transcript:

Genes and Inheritance Review

What did Mendel discover about genes? What is the difference between dominant and recessive alleles? What is the genotype of an organism? What is the phenotype of an organism?

Using T for the dominant allele and t for the recessive allele, draw a cross-diagram for a cross between two heterozygotes. Show the phenotype and genotype of parents, gametes, offspring, and the expected ratios of different phenotypes.

What is a Test Cross? Why must the test cross involve a recessive homozygote? In a test cross, what are the expected results if the unknown parent was homozygous?

What is a pedigree? How can a pedigree be used to determine the genotype of organisms?

What is co-dominance?

Draw a cross diagram to show the offspring produced if two pink snapdragons are crossed (R produces red flowers and W produces white flowers). Show phenotypes and genotypes of parents, gametes and offspring, including ratios of offspring.