Bellwork: 12/3/15 Which of the following describe meiosis? Crossing over creates gametes that are unique Causes increased genetic diversity in a population Used to grow and repair an organism Decreases the occurrence of mutations Creates identical cells Creates gametes that have half the number of chromosomes as the parent cell

Bellwork: 12/3/15 Which of the following describe meiosis? Crossing over creates gametes that are unique Causes increased genetic diversity in a population Used to grow and repair an organism Decreases the occurrence of mutations Creates identical cells Creates gametes that have half the number of chromosomes as the parent cell

Answer the following questions on your whiteboard. Please, work independently. Don’t draw or waste my markers. Thanks!

Which of the following are examples of phenotypes? Brown hair BB Bb Blue eyes Physical characteristics Genetic characteristics Bbyy Hitchhiker’s thumb

Which of the following are examples of phenotypes? Brown hair BB Bb Blue eyes Physical characteristics Genetic characteristics Bbyy Hitchhiker’s thumb

Which of the following are examples of genotypes? Black hair Ss AA green eyes Physical characteristics Genetic characteristics Bbyy snoring

Which of the following are examples of genotypes? Black hair Ss AA green eyes Physical characteristics Genetic characteristics Bbyy snoring

If red flowers (R) are dominant to white flowers, then what are the possible alleles for red flowers?

If red flowers are dominant to white flowers, then what are the possible genotypes for red flowers? RR, Rr

Red flowers (R) are dominant to white flowers. What would the genotype for a heterozygous plant be?

Red flowers (R) are dominant to white flowers. What would the allele for a heterozygous plant be? Rr

Having a hitchhiker's thumb (H) is a dominant trait. If a woman with a straight thumb has a child with a man who is heterozygous for the trait, what are the chances their child will have a hitchhiker's thumb?

Hh hh Hhhh 6-7. Having a hitchhiker's thumb (H) is a dominant trait. If a woman with a straight thumb has a child with a man who is heterozygous for the trait, what are the chances their child will have a hitchhiker's thumb? H h h 50% chance

Straight hair (S) is dominant to curly hair (s). What would be the phenotypic ratio for a child if both parents are heterozygous dominant?

SSSsSs SsSsss Straight hair (S) is dominant to curly hair (s). What would be the phenotypic ratio for a child if both parents are heterozygous dominant? S s s S 3 straight hair: 1 curly hair

Straight hair (S) is dominant to curly hair (s). What would be the genotypic ratio for a child if both parents are heterozygous dominant?

SSSsSs SsSsss 8. Straight hair (S) is dominant to curly hair (s). What would be the genotypic ratio for a child if both parents are heterozygous dominant? S s s S 1 SS: 2 Ss: 1 ss

What percent of offspring would have white flowers in a cross between pink flower (PP) and a white flower (pp)?

PpPpPpPp PpPpPpPp P p 0 % would be white

Why is it possible for one kid to look like their mom, but their sister to look like their dad?

Each kid inherits a different combination of chromosomes from their parents

Long fingers are dominant (F) to short fingers (f). Complete the Punnett square for a homozygous recessive mom and a heterozygous dad. What are the chances that their child will have short fingers?

FfFfff FfFf Long fingers are dominant (F) to short fingers (f). Complete the Punnett square for a homozygous recessive mom and a heterozygous dad. What are the chances that their child will have short fingers? F f f 50% would be short fingers

Pink petals are dominant (P) to white petals (p) and long stems (L) are dominant to short stems (l). If two heterozygous plants are crossed, what would be the chance they’d produce a pink, short stemmed plant?

P l L lL p P p PP ¾ x ¼ = 3/16 PpPp pp PpPp llLl LL

Yellow eyes (e + ) are dominant to green eyes (e) in cats. A homozygous yellow eyed cat (e + e + ) is crossed with a homozygous green eyed cat (ee). What do you predict will be the outcome of this genetic cross?

e+e+ e+e+ e+e+ e+e+ e+e+ e e e+e+ e e e e All the offspring will be yellow eyed (heterozygous)

Pink petals are dominant (P) to white petals (p) and long stems (L) are dominant to short stems (l). What percentage of the offspring from a PpLl x ppll cross would be homozygous recessive?

P l l lL p p p PpPp ½ x ½ = ¼ or 25% PpPp pp llLl ll Ll

Pictionary Rules: 1.You will compete against another team of two. (Team 1 will have person A and B. Team 2 will have person A and B). 2.You will be given a word. One person must draw pictures (no words or gestures) to get their partner to guess the word before time runs out. **The partner can’t look at the word*** 3.If the word is guessed, then that team gets a point. 4.The other team will be watching to make sure that no one cheats. 5.After Team 1 goes, then Team 2 person A goes. Team 1 keeps them from cheating. We’ll alternate for the rest of the game in this order: Team 1 Person A Team 2 Person A Team 1 Person B Team 2 Person B

Heterozygous

Homozygous dominant

Genotype

Phenotype

Trait

DNA

Dominant

Recessive

Hybrid

Mitosis

Meiosis