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Genetics. The study of genes and the inheritance of traits. Characteristics. These are features you exhibit physically ( your looks) Example : Eye color - green. Traits. The different versions of a characteristic Example: blue, green, and brown eyes. Inheritance.

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PowerPoint Slideshow about 'Genetics' - RoyLauris


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genetics

Genetics

The study of genes and the inheritance of traits

characteristics
Characteristics
  • These are features you exhibit physically

( your looks)

Example: Eye color - green

traits
Traits
  • The different versions of a characteristic
  • Example: blue, green, and brown eyes
inheritance
Inheritance
  • Occurs when traits are passed down from parent to child.
genes
Genes
  • Bits of information passed down from parent to child.
  • Made of chemicals called DNA.
genetic diseases
Genetic Diseases
  • Can be passed on through genes from a parent to the child.
  • Example : Marfan Syndrome

(Individual is tall, has long arms and legs)

Remember - JOE

reproduction
Reproduction
  • Sexual – Sperm fertilizes an egg to produce offspring
  • Asexual – occurs when 1 organism copies itself to produce offspring
fertilization
Fertilization
  • Occurs when a sperm unites with an egg
offspring
Offspring
  • Another name for the children of a male and female parent
mutation
Mutation
  • Occurs when genes make a mistake mixing and produce new or different traits in the offspring.
genotype
Genotype
  • A combination of alleles

Example: TT, Tt, or tt

*We flipped coins to determine the genotype of our critters and puppies.

alleles
Alleles
  • T – is considered a dominant allele
  • t – is considered a recessive allele

TT – is dominant

Tt or tT – is dominant

tt - is recessive

punnett square
Punnett Square
  • Uses mom and dad’s genotypes to determine the possible traits of their offspring.
  • 4 offspring
phenotype
Phenotype
  • They are the traits determined by reading the genotype.
  • Example : FF = black fur
  • Black fur is the phenotype or trait
slide15

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