Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Genotype vs Phenotype - Spring Lake Park Schools
Document related concepts
Transcript
GENOTYPE VS. PHENOTYPE - Start a new page - Add it to your TOC LEARNING TARGET I recognize that genes carry information which determines traits. GENE The instructions for a specific trait Found on one section of DNA You have a different gene(s) for each of the following traits: Hair color Eye color Hitchhiker’s thumb Tongue rolling Height ALLELE The different forms of a gene. Examples: Hitchhiker’s thumb OR Straight thumb Can roll tongue OR Can’t roll tongue Blonde hair OR Black hair OR Brown hair OR Red hair (Note: One allele comes from each parent.) DOMINANT ALLELES Alleles that cover up all other alleles. Hides, covers, masks, or over-powers Always shows up when present (it dominates!) Shown with UPPERCASE letters. Examples: H B A RECESSIVE ALLELES Alleles that get covered up by any dominant allele. Shown with lowercase letters. Examples: h b a HOMOZYGOUS When both alleles are the SAME Homo = same Examples: HH = homozygous DOMINANT hh = homozygous RECESSIVE HETEROZYGOUS When both alleles are DIFFERENT Hetero = different Examples: Hh Qq Rr GENOTYPE The genes that an organism has (Genotype = Genes) Represented by letters Examples: Hh BB tt Qq PHENOTYPE The traits or characteristics of an organism What it looks like (Phenotype = Features) Examples: Hair color Eye color Hitchhiker’s thumb Tongue rolling Height EXAMPLES/PRACTICE EYE COLOR BROWN IS DOMINANT TO BLUE (Use the letter “b”) B = brown allele (dominant) . b = blue allele (recessive) BRAD PITT Brown is dominant to blue. Brad has blue eyes. What is his PHENOTYPE? What is his GENOTYPE? BRAD PITT Brown is dominant to blue. PHENOTYPE: blue eyes GENOTYPE: bb JUSTIN BIEBER Justin has brown eyes. What is his PHENOTYPE? What is his GENOTYPE? Brown is dominant to blue. JUSTIN BIEBER PHENOTYPE: brown eyes GENOTYPE: BB or Bb Brown is dominant to blue. HAIRLINE (use the letter “h”) WIDOW’S PEAK IS DOMINANT TO STRAIGHT HAIRLINE Widow’s peak is dominant to normal hairline. JOHN TRAVOLTA John has a widow’s peak. What is his PHENOTYPE? What is his GENOTYPE? Widow’s peak is dominant to normal hairline. JOHN TRAVOLTA PHENOTYPE: widow’s peak GENOTYPE: HH or Hh LEBRON JAMES Widow’s peak is dominant to normal hairline. LeBron has a straight hairline. What is his PHENOTYPE? What is his GENOTYPE? LEBRON JAMES Widow’s peak is dominant to normal hairline. PHENOTYPE: straight hairline GENOTYPE: hh SKIN (use the letter “f”) FRECKLES ARE DOMINANT TO NO FRECKLES JENNIFER LOPEZ Freckles are dominant to no freckles. JLo has no freckles. What is her PHENOTYPE? What is her GENOTYPE? JENNIFER LOPEZ Freckles are dominant to no freckles. PHENOTYPE: no freckles GENOTYPE: ff LINDSAY LOHAN Lindsay has freckles. What is her PHENOTYPE? What is her GENOTYPE? Freckles are dominant to no freckles. LINDSAY LOHAN PHENOTYPE: freckles GENOTYPE: FF or Ff Freckles are dominant to no freckles. DIGITS (FINGERS AND TOES) (use the letter “d”) POLYDACTYLY IS DOMINANT TO 5 DIGITS “NORMAL” 5 DIGITS Polydactyly is dominant to 5 digits. These people have 5 digits. What is the PHENOTYPE? What is the GENOTYPE? “NORMAL” 5 DIGITS Polydactyly is dominant to 5 digits. PHENOTYPE: 5 digits GENOTYPE: dd Polydactyly is dominant to 5 digits POLYDACTYLY (EXTRA DIGITS) These people have Polydactyly. What is the PHENOTYPE? What is the GENOTYPE? Polydactyly is dominant to 5 digits POLYDACTYLY (EXTRA DIGITS) PHENOTYPE: Polydactyly GENOTYPE: Dd or DD ALBINISM (RECESSIVE) MORE PRACTICE RIHANNA Brown is dominant to blue. Rihanna has brown eyes. What is her PHENOTYPE? What is her GENOTYPE? RIHANNA Brown is dominant to blue. PHENOTYPE: brown eyes GENOTYPE: BB or Bb LADY GAGA Freckles are dominant to no freckles. Lady Gaga has no freckles. What is her PHENOTYPE? What is her GENOTYPE? LADY GAGA Freckles are dominant to no freckles. Lady Gaga has no freckles. PHENOTYPE: no freckles GENOTYPE: ff
