Kami Export - Muhammad Sajid - EG - Dihybrid PDF

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Muhammad Sajid Name_

Emoji Geneti Genetics cs Dihybrid Cross Crosses es

Everyone knows that emojis are great for getting your feelings across, but did you know that for every cute, little face, there are dominant and recessive traits that make them look the way that they do? Use your genetics knowledge to answer these questions .

Us Use e tra trait it data from the tab table le be below low to an answer swer th the e questions Tra Trait it

Dom Dominant inant

Reces Recessive sive

Eyes

Open(E E)

Closed (e)

Mouth

Smiley (M M)

Frowny (m)

Teeth

Has teeth (T)

No teeth (t)

FOI FOIL L Ch Cheat eat Sh Sheet eet First O utside Inside L ast

Pa Part rt 1: Use the FOIL me method thod to de determine termine th the e ga gametes metes fo forr the fo following llowing parents.

Tm, Tm, Tm, Tm 1. TTmm_____________________________ TM, Tm, tM, tm 2. TtMm _____________________________

ET, ET, eT, eT 5. EeTT ______________________________ EM, Em, EM, Em 6. EEMm _____________________________

tm, tm, tm, tm 3. ttmm _____________________________ tE, te, tE, te 4. ttEe _____________________________

Te, Te, te, te 7. Ttee______________________________ eM, eM, eM, eM 8. eeMM _____________________________

Part 2: Use dihybrid crosses to answer answer the following questions. Show Show y our work. work. Part 9. Gurrin is a heterozygous smiley emoji with no teeth (Mmtt) and Sadie is a frowny emoji with homozygous teeth (mmTT). Fill in the dihybrid cross below to show the probabilities of their offspring. Fill in the phenotypes and probabilities on the chart below.

Mt mT

MmTt

Mt

mt

mt

MmTt mmTt

mmTt

Phe Phenotype notype

MmTt mmTt

mmTt

Smiley Has Teeth

mmTt

mmTt

MmTt mmTt

mmTt

mT

MmTt

mT

MmTt MmTt

mT

MmTt

Frowny Has Teeth

© Schilly Science

Gen Genotype otype

Probabi Probability lity

MmTt

8 or ___ 16

mmTt

8 or 50% ___ or 1/2 16

50% or 1/2

Muhammad Sajid 10. Two happy emojis are both heterozygous for their huge smiles and open eyes. Determine their genotypes and then complete the dihybrid cross below to find the ratio of the various phenotypes.

ME ME

Me mE me

Me

mE

me

MMEE MMEe MmEE MmEe

MMEe MMee MmEe Mmee

MmEE MmEe mmEE mmEe

MmEe Mmee mmEe

mmee

MmEe Mom’s Genotype________ MmEe Dad’s Genotype_________ Phe Phenotype notype

Genotype(s)

Pr Probab obab obability ility

Smiley Open eyes

MMEE, MMEe, MmEE, MmEe

9 ___ 16

Smiley Closed Eyes

MMee, Mmee

3 ___ 16

Frowny Open eyes

mmEE, mmEe

3 ___ 16

Frowny Closed Eyes

mmee

1 ___ 16

Phenotype Ratio for Heterozygous parents 3 1 3 9 _________: _________: _________: _________ 11. Lorena emoji is very proud of her homozygous alleles for having teeth, but she has always wished her eyes were open. Unfortunately, they are closed, but she’s married a cute, homozygous open-eyed emoji man with no teeth, so she’s hoping to have wideeyed babies. Determine their genotypes to complete the dihybrid cross and chart below and then circle all of the offspring who have open eyes and teeth.

Te

Te

Te

Te

tE TtEe TtEe TtEe TtEe tE TtEe TtEe TtEe TtEe tE

TtEe

TtEe TtEe TtEe

tE TtEe TtEe TtEe TtEe

TTee Mom’s Genotype________ ttEE Dad’s Genotype_________ Phen Phenotype otype

Ge Genotype(s) notype(s)

Probability

Has Teeth Open Eyes Has Teeth

TT TTEE, EE, TTEe TTEe,, Tt TtEE, EE, TtE TtEe e

16 ___

Closed Eyes

TT TTee, ee, Tt Ttee ee

___ 0 16

No Teeth Open Eyes No Teeth

ttE ttEE, E, ttE ttEe e

0 ___ 16

Closed Eyes

tte ttee e

0 ___ 16

© Schilly Science

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