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Monster Genetics Lab: Predicting Offspring Traits through Punnett Squares, Lecture notes of Genetics

Brussels Management School (ICHEC)Genetics

A genetics lab activity where students apply their knowledge of simple and complex genetic traits to determine the genotypes and phenotypes of a female monster and a male monster. Using punnett squares, students predict the traits of their offspring for various traits such as eye color, skin color, tail shape, and more.

Typology: Lecture notes

2021/2022

Uploaded on 08/05/2022

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Name____________________________Date:___________
ClassPeriodPage|1
MonsterGeneticsLab
[Note:Thetwolabactivitiesallowstudentstoapplytheirknowledgeofsimpleandcomplex
genetictraits.Studentsdemonstratehowtheyareabletoapplyandsynthesizewhattheyhave
learnedinafunactivity.Ifpossible,allowstudentstoillustratebothparentandchildmonsters
basedonthegeneticinformationidentifiedforallthreemonstersduringthelab.]
Youhavelearnedaboutmanydifferentpatternsofinheritance.Somearesimpledominantor
recessive,asinMendeliantraits.Somearemorecomplex,suchasincompletedominantor
codominanttraits.Inthislabyouwillinvestigatehowacombinationofthesegenesworksto
createanorganism.
Part1Procedure:
1. Flipacointwicetodeterminethegenotypeforeachtraitandrecorditinthedatatable.
Heads=allele1,Tails=allele2(Example:ifyouflippedheadstwice,yourmonster
willhavetwocopiesofallele1forhisgenotype.)
2. Determinethephenotyperesultingfromtheallelepairforeachtrait.
3. Repeatsteps1‐2foreachtraitandcompletethefemalemonster’sTable1.
Table1:Genotypes&PhenotypesforFemaleMonster
TraitAllele1Allele2GenotypePhenotype
EyeTwosmalleyes(E)Onelargeeye(e)
EyeColor
(incomplete)
Red(R)White(R’)
SkinColor
(codominant)
Green(G)Blue(B)
TailShapeCurly(C)Straight(c)
TailColorPurple(P)Orange(p)
Tail
(regulatorygene)
Havetail(T)Notail(t)
TeethSharp(S)Round(s)
Feet
(incomplete)
Fourtoes(F)Twotoes(F’)
HornColorPurple(W)White(w)
EarshapePointy(Y)Round(y)
Ears
(regulatory)
Noears(N)Twoears(n)
ClawsLong(L)Short(l)
pf2

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Download Monster Genetics Lab: Predicting Offspring Traits through Punnett Squares and more Lecture notes Genetics in PDF only on Docsity!

Name ____________________________ Date: ___________

Class Period P a g e | 1

Monster Genetics Lab

[Note: The two lab activities allow students to apply their knowledge of simple and complex genetic traits. Students demonstrate how they are able to apply and synthesize what they have learned in a fun activity. If possible, allow students to illustrate both parent and child monsters based on the genetic information identified for all three monsters during the lab.]

You have learned about many different patterns of inheritance. Some are simple dominant or recessive, as in Mendelian traits. Some are more complex, such as incomplete dominant or codominant traits. In this lab you will investigate how a combination of these genes works to create an organism.

Part 1 Procedure :

  1. Flip a coin twice to determine the genotype for each trait and record it in the data table. Heads = allele 1, Tails = allele 2 ( Example: if you flipped heads twice, your monster will have two copies of allele 1 for his genotype. ) 2. Determine the phenotype resulting from the allele pair for each trait.
  2. Repeat steps 1 ‐ 2 for each trait and complete the female monster’s Table 1.

Table 1: Genotypes & Phenotypes for Female Monster Trait Allele 1 Allele 2 Genotype Phenotype Eye Two small eyes (E) One large eye (e)

Eye Color (incomplete)

Red (R) White (R’)

Skin Color (codominant)

Green (G) Blue (B)

Tail Shape Curly (C) Straight (c)

Tail Color Purple (P) Orange (p)

Tail (regulatory gene)

Have tail (T) No tail (t)

Teeth Sharp (S) Round (s)

Feet (incomplete)

Four toes (F) Two toes (F’)

Horn Color Purple (W) White (w)

Ear shape Pointy (Y) Round (y)

Ears (regulatory)

No ears (N) Two ears (n)

Claws Long (L) Short (l)

Name ____________________________ Date: ___________ Class Period P a g e | 2

Part 2 Procedure: The female monster (described in Table 1) and a male monster (see Table 2 below) plan to have baby monsters. They are interested in finding out for each trait the probability that their offspring will have that trait.

  1. Fill in the missing genetic information in the table for the male.

Table 2: Genotypes & Phenotypes for Male Monster Trait Genotype Phenotype

Eyes ee Eye Color (incomplete)

White

Skin Color (codominant)

Green

Tail Shape Straight

Tail Color Pp

Tail (regulatory)

No tail

Teeth Round

Feet (incomplete)

FF’

Horn Color ww Ear shape yy Ears (regulatory)

Have 2 ears

Claws Short

  1. Create Punnett squares (attach your work to this handout) to predict what traits would result from a cross between the two monsters for each trait, and answer the following questions: a. Eyes – What percent of offspring will have only one eye? _________ b. Eye Color – What percent of offspring will have red eyes? _________ c. Skin Color – What percent of offspring will have green skin? _________ d. Tail – What percent of offspring will have a tail? _________ e. Feet – What percent of offspring will have three toes? _________ f. Horn Color – What percent of offspring will have purple horns? _________ g. Ears – What percent of offspring will have ears? _________ h. Claws – What percent of offspring will have long claws? _________