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Question!? 3/31. The Great Irish Famine happened in 1845. How was genetics the issue?. The Results of Genetics. Evolution, Natural Selection, Mutants Ag Biology. Incomplete Dominance. Alleles for a trait are not completely dominant/recessive

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question 3 31
Question!? 3/31
  • The Great Irish Famine happened in 1845. How was genetics the issue?
the results of genetics

The Results of Genetics

Evolution, Natural Selection, Mutants

Ag Biology

incomplete dominance
Incomplete Dominance
  • Alleles for a trait are not completely dominant/recessive
    • Heterozygous is a different phenotype than either homozygous genotype
    • Example:
codominance
Codominance
  • Both alleles are expressed at the same time
    • Example: roan cattle
sex linked traits
Sex-Linked Traits
  • Chromosomes determine gender
    • XX = female
    • XY = male
  • The Y chromosome does not carry all the same genes the X chromosome does
pedigrees
Pedigrees
  • Visual to represent inheritance of a trait
question 4 3
Question!? 4/3
  • If you cross

XBXb with XbY

How many will show the recessive trait?

mutants
Mutants

Mutant:

Spiderman

Form of Mutation:

DNA replacement

mutants6
Mutants
  • Any change in the DNA sequence that also changes the protein it codes for
mutants7
Mutants
  • Body Cell Mutation:
    • Affects the cell it happens in, but not the whole individual
  • Reproductive Cell Mutation:
    • Can affect the whole new individual
mutants8
Mutants
  • Mutagen
    • Something that causes mutations
    • Examples: radiation, chemicals, high temperatures
mutants9
Mutants
  • Types of Mutations
    • Deletion

A B C D F G H I

    • Insertion

A B F C D E F G H I

    • Inversion

A B C E D F G H I

    • Translocation A B F G E C D H I
mutants10
Mutants
  • Mutations and Evolution
    • One aspect of evolutionary theory relies on the idea that new traits are introduced by mutation that benefit individuals so that the trait is passed on to more offspring, until all members of the population have it
mutants11
Mutants

Mutant:

Spiderman

Form of Mutation:

DNA replacement

mutants12
Mutants

Mutant:

Wolverine

Form of Mutation:

Genetic

mutants13
Mutants

Mutant:

Hulk

Form of Mutation:

Mutagen (gamma radiation)

mutants14
Mutants

Mutant:

Rafael (TMNT)

Form of Mutation:

Mutagen (ooze)

mutants15
Mutants

Mutant:

Ruby-Red Grapefruit

Form of Mutation:

Mutagen (irradiation

of reproductive cells)

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