5 a day revision B1 – You and your genes What genes do

Slides:

Advertisements

Similar presentations

Title: B1 Revision.

Advertisements

B1 Revision – You and Your Genes

B1 – You and your Genes Locating genes Genes are located in chromosomes which are in the nucleus of cells cell nucleus.

Mendel ( ) Mendel studied inheritance in peas. His idea was that organisms passed on separate characteristics via “inherited factors” (we now call.

 Genes are found on the X AND Y chromosomes.  Genes that are carried on the sex chromosomes are called sex linked genes.

1 Modern Genetics Chapter 4. 2 Human Inheritance Some human traits are controlled by single genes with two alleles, and others by single genes with multiple.

 What is genetics?  Genetics is the study of heredity, the process in which a parent passes certain genes onto their children. What does that mean?

You + Your Genes B1 Revision Notes. Individual Characteristics Features determined either owing to environment or inheritance. Examples? Variation amongst.

You and your Genes. By Helena Cowling.

2.5.6 Genetic Inheritance Causes of Variation Evolution Follow-Me – iQuiz.

Genetic Pedigree Diagrams. What are genetic pedigree diagrams? Show how an inherited trait (characteristic) runs in a group of related individuals. You.

Genetic Diseases L.O: To understand how some genetic diseases can be inherited Starter: list as many inherited diseases that you can think of.

7.1 Chromosomes and Phenotype KEY CONCEPT The chromosomes on which genes are located can affect the expression of traits.

B2 – Biology Inheritance Mr. P. Collins. B2.8 Inheritance - AIMS to explain why Mendel proposed the idea of separately inherited factors and why the importance.

GENETICS REVIEW. A physical trait that shows as a result of an organism’s particular genotype. PHENOTYPE.

Genetics Continued. Genetic variation The major advantage of sexual reproduction is that it creates genetic variation within a species. We have 23 pairs.

Compare mitosis and meiosis Mitosis (nearly all cells)– chromosomes d……….., cell splits o…... into … cells, both have the s…… number of chromosomes at.

Genetic disorders can be due to any of the following factors: A. Monogenetic Disorders: Caused by a mutation in a single gene 1. Autosomal recessive alleles:

Genetic Screening and Counselling

CP Biology Genetics Unit

Unit 2 – Pedigrees.

Unit D Vocabulary Genetics/Heredity. 1. Gene A specific sequence of DNA that determines one or more traits.

Sex-Linked Traits. Inheritance of Traits  X-linked Disorders - occur mainly in males because the mother usually donates the recessive allele and males.

Organisation of genetic material Each chromosome in the nucleus contains thousands of genes.

Genetics: Inheritance. Meiosis: Summary  Diploid Cells (2n): Cells with two sets of chromosomes, (aka “homologous chromosomes”)  One set of chromosomes.

Chapter 5 Heredity and Genetics. Dimples Heredity Traits – things that make a person unique Eye color and shape, nose shape, cheekbone structure, skin.

What do you know? Meiosis & mitosis? Inheritance? Cystic Fibrosis? Polydactly?

GENETICS SINCE MENDEL. THE STUDENTS WILL: Explain how traits are inherited by incomplete dominance. Compare Multiple Alleles and Polygenic Inheritance.

How do chromosomes determine sex and some diseases

Two copies of each autosomal gene affect phenotype.

KA 4: Ante- and postnatal screening

KEY CONCEPT A combination of methods is used to study human genetics.

Objectives Students will be able to: Relate dominant-recessive patterns of inheritance in autosomal chromosomes to genetic disorders. Describe patterns.

Two copies of each autosomal gene affect phenotype.

Blood Group Notes.

Inheritance, Variation and Evolution

Two copies of each autosomal gene affect phenotype.

Genetics and inheritance

How can human traits be traced through generations?

Two copies of each autosomal gene affect phenotype.

Genetics: Inheritance

5 a day revision Inheritance What happens during fertilisation?

Two copies of each autosomal gene affect phenotype.

Test Review Part 2 Heredity

B2b Revision Who was Mendel?

Daily Routine Sit in your appropriate seat quietly

Sex Linked Genes.

Explain how mass vaccination can reduce the spread of a disease.

Two copies of each autosomal gene affect phenotype.

Genetics definitions Label each chromosome pair as homozygous dominant, homozygous recessive, or heterozygous with definitions Label dominant.

Two copies of each autosomal gene affect phenotype.

Genetics Chapter 10—pages

Trilogy – Biology – CHAPTER 6 – Genetics

Inheritance Make sure you revise: Mitosis - cell division

Class Notes #8: Genetic Disorders

Genetics: Inheritance

Section 3: Modeling Mendel’s Laws

Biology 4.6 Inheritance, Variation and Evolution

The principles of genetics are being used to change the world!

Two copies of each autosomal gene affect phenotype.

Two copies of each autosomal gene affect phenotype.

S3: HEREDITY E1: SEX-LINKED TRAITS

Two copies of each autosomal gene affect phenotype.

Chapter 10 assessment.

Carrier = an organism that has inherited a genetic trait or mutation, but displays no symptoms X-linked traits = traits that are passed on from parents.

GENETICS HEREDITY.

Inheritance & Variance Traits Vocabulary

B6 – DNA, Protein Synthesis and Mutations

Presentation transcript:

5 a day revision B1 – You and your genes What genes do Name the 2 groups of proteins and give an example of each. Where in the cell are genes found? What chemical are they made of? How do genes control our characteristics? Explain the difference between genotype and phenotype. How can studies of identical twins help us to understand the effect of the environment on phenotype for a characteristic? @aegilopoides

5 a day revision B1 – You and your genes Genes and variation How many chromosomes are found in sex cells? Why is this important? What is a mutation? Define allele. Explain the difference between homozygous and heterozygous. Explain why you are similar to, but different from your parents. @aegilopoides

5 a day revision B1 – You and your genes Sex chromosomes Henry VIII blamed his wives for not producing a male heir, was he right? Define the terms: Dominant Recessive Use a Punnet square to show the inheritance of sex chromosomes. Explain how some embryos develop into males? Why are males more likely to have sex-linked diseases such as haemophilia? @aegilopoides

5 a day revision B1 – You and your genes Genetic disorders 1 in 25 people in the UK are carriers of Cystic Fibrosis. Explain why carriers do not have the disease but their children might. Describe the symptoms of: a) Huntington’s disease b) Cystic fibrosis What is the difference between inherited disorders caused by dominant and recessive alleles? Give reasons for carrying out genetic tests on children and adults. What are the implications of genetic screening programmes carried out by employers and insurance companies? @aegilopoides

5 a day revision B1 – You and your genes Cloning and stem cells It is possible to produce clones of animals. Explain how this can occur both naturally and artificially. What is a clone? Explain the difference between embryonic and adult stem cells. What are the potential applications of stem cells in medicine? Scientists are able to reprogram adult cells so that they behave like embryonic stem cells. Explain why the use of these cells would be less controversial that the use of embryonic stem cells. @aegilopoides