Writing Prompt Pretend you have just discovered a new species of animal in your backyard. Describe the phenotype and genotype of this new organism and then draw how it looks. Show the traits! Include in your writing Is each trait dominant or recessive? Is the animal pure of hybrid for each trait?

Warm-Up What is a monohybrid cross? Give me the possible genotype of a human with a round shaped face. Round = dominant Square = recessive Give me the possible genotype of a human with short eyelashes. Long eyelashes = dominant Short eyelashes = recessive

Trait Genotype Phenotype Pure or Hybrid

Warm-Up Explain the meaning of the words ‘Pure’ and ‘Hybrid’. Write an example of the genotype of a ‘Pure’ organism and a ‘Hybrid’ organism.

Pure- organisms that have two of the same genes for a certain trait Answer Pure- organisms that have two of the same genes for a certain trait BB or bb Hybrid- organisms that have two unlike genes for a certain trait Bb

Vocabulary Ladder Allele Chromosomes Genes Heredity/Inheritance Inherited traits Genotype Phenotype Dominant traits Recessive traits

Warm-Up What is the difference between genotype and phenotype? Give an example of a genotype. Give an example of a phenotype.

Warm-Up Define “Traits” and “Phenotype”. Describe the difference between the two terms. Study for You Test!!!!

Describe/List some of your traits. Warm-Up What are traits? Describe/List some of your traits.

Genetics Who do you look like?

Gregor Mendel – Father of Genetics

Gregor Mendel Carried out first important studies of heredity Heredity/Inheritance – passing of traits from parent to offspring ½ genetic material from Mom ½ genetic material from Dad Worked with pea plants (garden peas) Father of Genetics

Traits Physical characteristics May be the same as your parents b/c Genetic info (DNA) passed from parent to offspring during reproduction. Ex. – hair color, eye shape, ability to roll your tongue, height

Chromosomes Structures found in the nucleus Contains genetic information (DNA)

Gene Segment of DNA on a chromosome Determine traits of an organism There are genes for all sorts of characteristics Height Nose size and shape Color of hair, skin, eyes

Genes (cont) Genes for a trait come in pairs One gene from that pair is called an allele.

Genes (cont) Expressed in 2 different forms GENOTYPE- set of genes carried by organism Represented by combination of letters PHENOTYPE- physical characteristics What it looks like

Inherited Traits Characteristics passed from parent to offspring Some dominant Some recessive

Dominant Trait Trait that will always be expressed Represented by capital letters

Recessive Trait Trait that will only be expressed if 2 recessive alleles are present If a dominant allele is present, the recessive trait will not be expressed Alleles represented by lowercase letters

Important Vocabulary Heredity Inheritance Traits Chromosomes Genes Allele Genotype Phenotype Inherited Traits Dominant trait Recessive trait

Page 11- Page 12- Page 13- Page 14- Write the answer only for #1-10. Write the letter only for #1-5 Page 12- Write the answer only for # 1-10 Page 13- Copy the chart and fill in the blanks and write the question and the answer for #11 &12 Write the answer only for #1-5 Page 14- Write the answer only for # 1-15 Write the answer in complete sentences for the ‘Reaching Out’ problem at the bottom of the page.

Sentences Using the 11 vocabulary words, write a 6 word sentence for each word.