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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:.

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genetics review

Genetics Review

Mendel

Punnett Squares

Complex inheritance

Human Genetics

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
tt x tt or tt x tt

What are the genotypes of these parents:

  • Heterozygous for tall x Homozygous for short
Tt x tt or TT x tt
tt x tt

What are the genotypes of these parents:

  • Heterozygous for tall x Homozygous for short
Tt x tt
what genotype goes here

R r

R

r

R = round,

r = wrinkled

Cc?

What genotype goes here?
complete

RR = red Rr= red rr=white

What kind of dominance?

Complete
incomplete or co dominance

AA or AO = type A

  • BB or BO = type B
  • AB = typeAB
  • OO = typeO
  • What kind of dominance?
Incomplete or co-dominance
co dominance

AA or AO = type A

  • BB or BO = type B
  • AB = typeAB
  • OO = typeO
  • What kind of dominance?
co-dominance
codominance or incomplete

RR = redRr = orange

  • rr = yellow
  • What kind of dominance?
Codominance or incomplete
incomplete

RR = redRr = orange

  • rr = yellow
  • What kind of dominance?
incomplete
x linked or y linked

Dad is not colorblind

  • Mom is colorblind

Xb

Xb

XBXb

XBXb

XB

Xby

y

Xby

X-linked or y-linked
x linked

Dad is not colorblind

  • Mom is colorblind

Xb

Xb

XBXb

XBXb

XB

Xby

y

Xby

X-linked