X

Download Genetic Crosses PowerPoint Presentation

SlidesFinder-Advertising-Design.jpg

Login   OR  Register
X


Iframe embed code :



Presentation url :

Home / Health & Wellness / Health & Wellness Presentations / Genetic Crosses PowerPoint Presentation

Genetic Crosses PowerPoint Presentation

Ppt Presentation Embed Code   Zoom Ppt Presentation

PowerPoint is the world's most popular presentation software which can let you create professional Genetic Crosses powerpoint presentation easily and in no time. This helps you give your presentation on Genetic Crosses in a conference, a school lecture, a business proposal, in a webinar and business and professional representations.

The uploader spent his/her valuable time to create this Genetic Crosses powerpoint presentation slides, to share his/her useful content with the world. This ppt presentation uploaded by dixitdeep12 in Health & Wellness ppt presentation category is available for free download,and can be used according to your industries like finance, marketing, education, health and many more.

About This Presentation

Genetic Crosses Presentation Transcript

Slide 1 - Genetic Crosses Show possible outcomes of genes the new generation will have We use: Gene diagrams Punnett Squares
Slide 2 - Terminology Genotype Phenotype Parent Gamete Offspring dominant recessive allele
Slide 3 - Gene control of characteristics All characteristics are controlled by a minimum of 2 genes. These genes give the characteristic a different of presenting itself. Different genes that control the same feature are called ALLELES
Slide 4 - EYE COLOUR Possible alleles – blue , brown, green, hazel etc (each colour needs its own gene) It is possible to have pairs of different alleles, alleles are usually given a letter
Slide 5 - Genotype and phenotype Genotype is the letter or term used to describe the allele of an individual gene or pair of genes Phenotype – is how the gene (or pair) shows itself, how it appears.
Slide 6 - Dominance and recessiveness Some alleles for a feature are able to mask the influence of other (weaker) gene when they are paired Stronger gene is DOMINANT and is represented by a capital letter e.g. H The masked gene is RESSESIVE shown as lower case of the same letter e.g. h
Slide 7 - Gene diagram – Flower colour Genotype of alleles- R = red flower r = yellow flower All genes occur in pairs – so 2 alleles affect a characteristic – possible combinations are; genotype RR Rr rr Phenotype RED RED YELLOW
Slide 8 - Gene diagram – Flower colour Male female RR rr parent gamete R R r r Offspring genotype Rr Rr Rr Rr Phenotype All red
Slide 9 - Gene diagram – Flower colour Male female Rr Rr parent gamete R r R r Offspring genotype RR Rr Rr rr Phenotype Red yellow red red 3 red : 1 yellow
Slide 10 - Gene diagram – Flower colour Male female Rr rr parent gamete R r r r Offspring genotype Rr Rr rr rr Phenotype Red yellow yellow red Red 50% yellow 50%
Slide 11 - Punnett Square Another method of showing crosses
Slide 12 - Gamete genotypes are inserted Parent genotypes are inserted B=black b=white Bb male black bb white female B b b b What are the crosses Bb bb Bb bb 2 white and 2 black offspring 50:50 chance with these parents
Slide 13 - Question 2 black rats are mated, they have 13 offspring. All of which are black, what are the genotypes of the parents The male is re-mated with a white female, the offspring are 6 black and 7 white What were the genotypes of the original parents Rats have 2 coat colours – black B, white b. Both BB BB BUT one could be Bb Female BB Male Bb
Slide 14 - Remember think how lucky you are!
Slide 15 - This powerpoint was kindly donated to www.worldofteaching.com http://www.worldofteaching.com is home to over a thousand powerpoints submitted by teachers. This is a completely free site and requires no registration. Please visit and I hope it will help in your teaching.
 
Cookies Policy

This site uses cookies to deliver our services and to show you relevant ads and presentations. By clicking on "Accept", you acknowledge that you have read and understand our Cookie Policy

Accept