Determine the sequence of genes along a chromosome based on the following recombination frequencies A-D 10% B-C 15% B-D 5%

Slides:

Advertisements

Similar presentations

Genetics. Cells-Nucleus-Chromosomes- DNA- Genes They are all found in a cell. They are all located in the body.

Advertisements

Solving Genetic Problems

SEX- LINKED INHERITANCE

11-5 LINKAGE & GENE MAPS. 1. GENE LINKAGE Thomas Hunt did research on Drosophila ( fruit flies) From the experiment scientist learned that genes located.

Mutant phenotypes Short aristae Black body Cinnabar eyes Vestigial wings Brown eyes Long aristae (appendages on head) Gray body Red eyes Normal wings Red.

Linkage, Sex linkage, Pedigrees. Linked genes We know two traits should assort independently. Why? So, offspring phenotype ratios should be: –9:3:3:1.

The Chromosomal Basis for Inheritance. Thomas Hunt Morgan Early 1900s Columbia University (New York) Studied genetics of Drosophila melangaster (the common.

1. The genes for mahogany eyes and ebony body are recessive and 25 map units apart on an autosome in Drosophila. A mahogany- eyed female (wild type body,

The Chromosomal Basis of Inheritance Connecting Mendel's Work to Chromosomes.

Data from trihybrid crosses can also yield information about map distance and gene order The following experiment outlines a common strategy for using.

GENETICS PRACTICE. O T T F F S S E __ What comes next?

 Genes  Made up of DNA  Located on the Chromosomes During Meiosis pairs of genes separate and each new cell gets one form of a gene for a specific.

The Chromosomal Basis of Inheritance Chapter 15. The Chromosomal Theory of Inheritance chromosomes and genes are present as pairs in diploid cells homologous.

Chromosomal Theory of Inheritance- Genes are located on c’somes and the behavior of c’somes during meiosis & fertilization accounts for inheritance.

The Chromosomal Theory of Inheritance: Chromosomes and genes are present as pairs in diploid cells homologous chromosomes separate during meiosis fertilization.

GENETICS PRACTICE.

R r Y y WHAT ARE THE POSSIBLE GAMETES THIS PARENT CAN MAKE?

Recombination Frequency and Gene Linkage Mapping

Linkage Groups & Chromosome Maps

The Chromosomal Theory of Inheritance: Chromosomes and genes are present as ______________________ homologous chromosomes ___________during meiosis ________________.

Determine the sequence of genes along a chromosome based on the following recombination frequencies A-C 20% A-D 10% B-C 15% B-D 5%

GENETICS PRACTICE Watch videos BOZEMAN- Beginner’s Guide to Punnett Squares BOZEMAN- Beginner’s Guide to Punnett Squares BOZEMAN- Mendelian genetics BOZEMAN-

A tall pea plant is crossed with a recessive dwarf pea plant

Mendelian Genetics Sample word problems. 1. In labrador retrievers, black fur (B) is dominant to yellow fur (b) Predict the offspring from a cross between.

Chapter 12 Linkage Maps. You Must Know The pattern of inheritance for linked and unlinked genes.

Similarities Cells-Nucleus- Chromosomes- DNA- genes Cells-Nucleus-Chromosomes- DNA- genes They are all located in cells.

AP Biology The Chromosomal Basis of Inheritance “Linked Genes”

The Chromosomal Basis of Mendel’s Laws

Mendel’s Laws of Heredity and Dihybrid Crosses

Mendelian Genetics Sample word problems.

LINKAGE AND GENETIC MAPPING

12.1 Sex Linkage Thomas Hunt Morgan: Sex Determination:

Genetics Review Powerpoint

Unit C: Cell Division, Genetics and Molecular Biology

Di-hybrid Inheritance with linkage and crossing over

Chances of having a child totally normal

Matthew 18:11 11 For the Son of man is come to save that which was lost.

Recombination and Linked Genes

GENETICS PRACTICE Kelly Riedell Brookings Biology

The Chromosomal Basis of Inheritance GENE MAPPING AP Biology/ Ms. Day

Copyright Pearson Prentice Hall

Chapter 15 – The Chromosomal Basis of Inheritance

PATTERNS OF INHERITANCE

The Chromosomal Basis of Inheritance

Variations of Genetics

And Yet more Inheritance

Mapping Genes and Linked Genes.

A Wild type fruit fly (heterozygous for gray body and normal wings) is mated with a black fly with vestigial wings. OFFSPRING: 778- wild type 785- black-vestigial.

GENETICS PRACTICE Kelly Riedell Brookings Biology

The Chromosomal Basis of Inheritance

BIOLOGY 12 Multiple Alleles.

Genes that do not obey Mendel’s Law of Independent Assortment

The Chromosomal Basis of Inheritance

Chances of having a child totally normal

Copyright Pearson Prentice Hall

The Chromosomal Basis of Inheritance GENE MAPPING AP Biology/ Ms. Day

IN DRAGONS Wings = dominant; No wings = recessive

Copyright Pearson Prentice Hall

DIHYBRID CROSSES & GENE LINKAGE

Copyright Pearson Prentice Hall

Copyright Pearson Prentice Hall

USING CROSSING OVER FREQUENCIES TO DETERMINE MAP DISTANCES

Chapter 12 Linkage Maps. Chapter 12 Linkage Maps.

Linkage Groups & Chromosome Maps

A Wild type fruit fly (heterozygous for gray body and normal wings) is mated with a black fly with vestigial wings. OFFSPRING: 778- wild type 785- black-vestigial.

Drosophila Genetics Inheritance of Body Color B. Three Point Testcross.

Presentation transcript:

Determine the sequence of genes along a chromosome based on the following recombination frequencies A-D 10% B-C 15% B-D 5%

Determine the sequence of genes along a chromosome based on the following recombination frequencies A-D 30% B-C 24% B-D 16%

Determine the sequence of genes along a chromosome based on the following recombination frequencies A-B 8% A-C 28% A-D 25% B-C 20% B-D 33%

A Wild type fruit fly (heterozygous for gray body and normal wings) is mated with a black fly with vestigial wings. OFFSPRING: 778- wild type 785- black-vestigial 158- black- normal wings 162- gray body-vestigial wings What is the recombination frequency between these genes?

A Wild type fruit fly (heterozygous for red eyes and normal wings) is mated with a HOMOZYGOUS RECESSIVE dumpy winged fly with purple eyes . OFFSPRING: 832- wild type (red eyes, normal wings) 841- dumpy wings-purple eyes 147- purple eyes- normal wings 152- red eyes-dumpy wings What is the recombination frequency between these genes?

A Wild type fruit fly (heterozygous for gray body and red eyes) is mated with a black fly with purple eyes. OFFSPRING: 721- gray body/red eyes 751- black body/purple eyes 49- gray body/purple eyes 45- black body/red-eyes What is the recombination frequency between these genes?