Genetics review
Download
1 / 78

Genetics Review - PowerPoint PPT Presentation


  • 137 Views
  • Uploaded on

Genetics Review. Mendel Punnett Squares Complex inheritance Human Genetics. Science of how traits are passed on from one generation to the next. Heredity Or Genetics. Science of how traits are passed on from one generation to the next. Genetics. Father of Genetics is:.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Genetics Review' - phelan-bonner


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Genetics review

Genetics Review

Mendel

Punnett Squares

Complex inheritance

Human Genetics




Mendel or hooke

Mendel or Hooke


Mendel

Mendel


Fruit flies or peas

Fruit flies or Peas



F 1 or p 1

Parent generation the next

F1 or P1


P 1 stands for parent

Parent generation the next

P1 Stands for Parent


F 1 and f 2 or g 1 and g 2

F1 and F2 or G1 and G2


F 1 and f 2 f filial latin for offspring

F1 and F2F = “Filial” Latin for Offspring






Complete dominace or segregation

COMPLETE DOMINACE OR SEGREGATION


Complete dominace and segregation

Complete DominaceAND Segregation


Explanation

  • Complete Dominance – Parent generation were pure Domiant and Recessive for traits: TT x tt so F1 generation all were heterozygous: Tt and only showed the dominant trait so the recessive trait “disappeared” or was hidden.

  • Segregation – using a Punnett square we can see that when the F1 generation are crossed with each other: Tt x Tt, ¼ of the offspring will have the recessive trait “reappear” because during meiosis – alleles separate or segregate and offspring get only one allele from Mom and one allele from Dad

Explanation


Punnett squares
Punnett Squares and Recessive for traits: TT x tt so F


Dominant or recessive

  • T and Recessive for traits: TT x tt so F

Dominant or Recessive


Dominant capital letter

  • T and Recessive for traits: TT x tt so F

Dominant (capital letTer)


Homozygous or heterozygous

  • tt and Recessive for traits: TT x tt so F

Homozygous or heterozygous


Homozygous letters identical

  • tt and Recessive for traits: TT x tt so F

Homozygous (letters identical)


Homozygous or heterozygous1

  • Ll and Recessive for traits: TT x tt so F

Homozygous or Heterozygous


Heterozygous different cases one lower and one upper

  • Ll and Recessive for traits: TT x tt so F

Heterozygous (Different cases – one lower and one upper)



Bb or bb both will look black because both have at least one dominant allele

If Black is dominant what are cats?2 possible genotypes for black cats?

BB or Bb both will look Black because both have at least one dominant allele




Tt x tt or tt x tt

Tt x tt or TT x tt


Tt x tt

Tt x tt


Genotype or phenotype

Genotype or Phenotype


Phenotype ph ysical appearance

Phenotype - Physical Appearance



gg The dominant trait determines the letter used, recessive traits are always shown in lower case of dominant letter


What genotype goes here

R r trait is Green?

R

r

R = round,

r = wrinkled

Cc?

What genotype goes here?


What genotype goes here rr

R r trait is Green?

R

r

Cc?

What genotype goes here? rr


What phenotype goes here

R r trait is Green?

R

r

Cc?

What Phenotype goes here?


What phenotype goes here wrinkled

R r trait is Green?

R

r

Cc?

What Phenotype goes here? wrinkled


What percent of offspring will be round

R trait is Green?r

r

r

Cc

What Percent of offspring will be Round?


What percent of offspring will be round 50

R trait is Green?r

r

r

Cc

What Percent of offspring will be Round? 50%


Homozygous or heterozygous2

Homozygous or heterozygous


Heterozygous

heterozygous


Homozygous or heterozygous3

Homozygous or Heterozygous


Homozygous

Homozygous


Complex inheritance
Complex inheritance trait is Green?


Blood type or skin color

Blood type or skin color


Blood type a b o skin color has multiple genes and a whole range of in between phenotypes

Blood type - A, B, o (skin color has multiple genes and a whole range of in between phenotypes)


Complete or incomplete

RR = red Rr= red trait is Green?rr=white

What kind of dominance?

Complete or incomplete


Complete

RR = red Rr= red trait is Green?rr=white

What kind of dominance?

Complete


Incomplete or co dominance

  • AA or A trait is Green?O = type A

  • BB or BO = type B

  • AB = typeAB

  • OO = typeO

  • What kind of dominance?

Incomplete or co-dominance


Co dominance

  • AA or A trait is Green?O = type A

  • BB or BO = type B

  • AB = typeAB

  • OO = typeO

  • What kind of dominance?

co-dominance


Codominance or incomplete

  • RR = red trait is Green?Rr = orange

  • rr = yellow

  • What kind of dominance?

Codominance or incomplete


Incomplete

  • RR = red trait is Green?Rr = orange

  • rr = yellow

  • What kind of dominance?

incomplete


A ab b o

A AB B o


o


A ab b o1

A AB B O


AB


Father mother

Father Mother


Father

Father


Sex chromosomes or autosomes

Sex chromosomes or Autosomes


Autosomes

Autosomes


Male or female

  • XY trait is Green?

Male or Female


  • XY trait is Green?

Male


X linked or y linked

Xb

Xb

XBXb

XBXb

XB

Xby

y

Xby

X-linked or y-linked


X linked

Xb

Xb

XBXb

XBXb

XB

Xby

y

Xby

X-linked


Pedigree or karyotype

Pedigree or karyotype


Karyotype

karyotype


Carrier nondisjunction

Carrier Nondisjunction


Nondisjunction

Nondisjunction




Male female
Male female trait is Green?


Male trait is Green?


Has disease carrier
Has Disease Carrier trait is Green?


Has disease
Has Disease trait is Green?


3 copies 1 copy

3 copies 1 copy


3 copies

3 copies


ad