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Making a monster-- Genotype activity

Making a monster genotype activity. The place to draw the monster is i...
Course

Teaching Of Science (SEC 395)

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Academic year: 2022/2023
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Name: _______________________________ Dat e: ________________________________ Due: ________________________________

Monster Genetics Lab Pre Lab Discussion

Heredit y is t he passing on of t rait s, or charact erist ics, f rom parent t o of f spring. The unit s of heredit y are

called genes. Dif f erent versions of t he same gene are called alleles. Genes are f ound on t he chromosomes

in a cell. The combinat ions of genes f or each t rait occur by chance.

When one allele in a pair is st ronger t han t he ot her allele, t he t rait of t he weaker allele is masked, or

hidden. The st ronger allele is t he dominant allele, and t he allele t hat is masked is t he recessive allele.

Dominant alleles are writ t en as capit al let t ers and recessive alleles are writ t en as lowercase let t ers. If bot h

alleles are dif f erent , t he t rait is said t o be het erozygous, or hybrid. Somet imes alleles are neit her dominant

nor recessive. The result of such a sit uat ion is a blending of t rait s.

The genet ic makeup of an individual is known as it s genot ype. The observable physical charact erist ics of an

individual t hat are t he result of t he genot ype are known as it s phenot ype.

In humans, t he sex of an individual is det ermined by t he part icular combinat ion of t he t wo sex chromosomes. Individuals t hat have t wo X chromosomes (XX) are f emales, whereas t hose wit h an X and a Y chromosome (XY) are males.

In t his invest igat ion, you will work wit h a part ner t o observe how t he result s of dif f erent gene combinat ions produce cert ain t rait s.

Problem: How are t rait s inherit ed?

Materials: Pencil Lab Sheet Two Coins

Procedure: 1. Clear an open space on your lab t able in which t o t oss t he coins. 2. You and your part ner should now t oss your coins at t he same t ime. Heads = allele 1, Tails = allele 2

Example: If you f l i p t wo heads, your monst er wi l l have t wo copi es of al l el e 1 f or i t s genot ype. The

t wo coi ns shoul d be f l i pped onl y once f or each t r ai t. 3. Det ermine t he genot ype f or each t rait and record it in Table 1. 4. Det ermine t he phenot ype result ing f rom t he allele pair f or each t rait and record it in Table 1. 5. Repeat st eps 1-2 f or each t rait and complet e Table 1. 6. Draw a pict ure of your f emale monst er in t he space provided on t he last page.

Table 1: Genotypes & Phenotypes for Female Monster Trait Allele 1 Allele 2 Genotype Phenotype Eye Two small eyes (E) One large eye (e) Tail Shape Curly (C) St raight (c) Tail Color Purple (P) Orange (p) Teet h Sharp (S) Round (s) Horn Color Purple (W) Whit e (w) Ear Shape Point y (Y) Round (y) Claws Long (L) Short (l) Skin Color Green (G) Blue (B)

  1. The f emale monst er is married t o t he male monst er (Table 2 below) and t hey are int erest ed in f inding out t he probabilit y of which t rait s t heir of f spring will have. Fill in t he missing genet ic inf ormat ion in t he t able below f or t he male monst er.

Table 2: Genotypes & Phenotypes for Male Monster Trait Genotype Phenotype Eye Ee Tail Shape Straight Tail color Orange Teet h Ss Horn Color Purple Ear shape YY Claws Ll Skin Color Green with Blue Spots

Analysis and Conclusion

  1. Complet e Punnet t squares t o predict what phenot ypes and genot ypes t he of f spring would have f rom a cross bet ween t he t wo monst ers f or t he f ollowing t rait s:

a. Eye Predicted Phenotypes:

b. Tail Color

c. Ear Shape

d. Claws

e. Skin Color

Drawing of Female Monster

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Making a monster-- Genotype activity

Course: Teaching Of Science (SEC 395)

20 Documents
Students shared 20 documents in this course

University: Pennsylvania Western University, California

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Name: _______________________________
Dat e: ________________________________
Due: ________________________________
Monster Genetics Lab
Pre Lab Discussion
Heredit y is t he passing on of t rait s, or charact erist ics, f rom parent t o of f spring. The unit s of heredit y are
called genes. Dif f erent versions of t he same gene are called alleles. Genes are f ound on t he chromosomes
in a cell. The combinat ions of genes f or each t rait occur by chance.
When one allele in a pair is st ronger t han t he ot her allele, t he t rait of t he weaker allel e is masked, or
hidden. The st ronger allele is t he dominant allele, and t he allele t hat is masked is t he recessive allele.
Dominant alleles are writ t en as capit al let t ers and recessive alleles are writ t en as lowercase let t ers. If bot h
alleles are dif f erent , t he t rait is said t o be het erozygous, or hybrid. Somet imes alleles are neit her dominant
nor recessive. The result of such a sit uat ion is a blending of t rait s.
The genet ic makeup of an individual is known as it s genot ype. The observable physical charact erist ics of an
individual t hat are t he result of t he genot ype are known as it s phenot ype.
In humans, t he sex of an individual is det ermined by t he part icular combinat ion of t he t wo sex
chromosomes. Individuals t hat have t wo X chromosomes (XX) are f emales, whereas t hose wit h an X and a Y
chromosome (XY) are males.
In t his invest igat ion, you will work wit h a part ner t o observe how t he result s of diff erent gene combinat ions
produce cert ain t rait s.
Problem: How are t rait s inherit ed?
Materials:
Pencil
Lab Sheet
Two Coins
Procedure:
1. Clear an open space on your lab t able in which t o t oss t he coins.
2. You and your part ner should now t oss your coins at t he same t ime.
Heads = allele 1, Tails = allele 2
Example: If you f lip t wo heads, your monst er wil l have t wo copi es of al l el e 1 f or it s genot ype. The
two coi ns shoul d be f lipped onl y once f or each t r ait .
3. Det ermine t he genot ype f or each t rait and record it in Table 1.
4. Det ermine t he phenot ype result ing f rom t he allele pair f or each t rait and record it in Table 1.
5. Repeat st eps 1-2 f or each t rait and complet e Table 1.
6. Draw a pict ure of your female monst er in t he space provided on t he last page.
Table 1: Genotypes & Phenotypes for Female Monster
Trait
Allele 1
Allele 2
Genotype
Phenotype
Eye
Two small eyes (E)
One large eye (e)
Tail Shape
Curly (C)
St raight (c)
Tail Color Purple (P) Orange (p)
Teet h
Sharp (S)
Round (s)
Horn Color
Purple (W)
Whit e (w)
Ear Shape
Point y (Y)
Round (y)
Cl aws
Long (L)
Short (l)
Skin Color
Green (G)
Blue (B)

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