Dragon Genetics Hands on Lab

Dragon Genetics Hands on Lab

Table of Contents

 

Order Number	Y47874HDUEW
Type of Project	Essay/Research Paper
Writer Level	PHD/MASTERS
Writing Style	APA/Harvard/MLA/CHICAGO
Citations	5
Page Count	3-15

Dragon Genetics Hands on LabDescription/Paper Instructions

Introduction:

There are many patterns of inheritance. This lab will explore Mendelian traits where alleles are dominant or recessive.

You will also have to understand genes that express incomplete dominance, codominance and are sex-linked. We will utilize this lab to explore those terms and to use our knowledge of gene combinations to create an organism.

Utilize this link to learn more about Mendelian traits, incomplete dominance and codominance.(Opens in new window) This link helps you to learn more about sex-linked genes. (Opens in new window)

Part 1 Procedure: Checking for Understanding (Worth up to 15pts)

1. For each genotype, tell me if it’s homozygous or heterozygous. If it is homozygous also tell me if it is dominant or recessive.
2. BB
3. jj
4. Pp
5. RR
6. ff
7. Dimples (D) is dominant to (d) no dimples. Brown Eyes (B) are dominant to (b) blue eyes. For each genotype indicate the phenotype.
8. Dd
9. DD
10. dd
11. BB
12. bb
13. Bb
14. For each phenotype list the genotype(s). Trait: Red flower (R); White flower (r)
15. Red flower (homozygous)
16. Red flower (heterozygous)
17. White flower

Part 2: Creating the Parents (Worth up to 48 pts)

1. Flip a coin to determine the genotype for each trait and record it in the data table.
2. Heads= allele 1, Tails = allele 2 ( Example: if you flipped heads twice, your dragon will have two copies of allele 1 for her genotype)
3. Determine the phenotype resulting from the allele pair for each trait.
4. Repeat steps 1-2 for each trait and complete the Mama Dragon’s Table 1.
5. Pay attention to the notes under the trait; it means it does not fully follow Mendelian rules.

Example:

For the trait Eye Size. I flipped my coin 2 times. Flip 1= heads (E); Flip 2= heads (E). So I would put EE in the Genotype box and Two Small Eyes in the Phenotype box for that trait.

Table 1: Genotypes and Phenotypes for Mama Dragon

Trait	Allele 1	Allele 2	Genotype	Phenotype
Eye Size & Number	Two Small (E)	One large (e)
Eye Color (incomplete Dom)	Red (R)	White (r)
Tail Shape	Curly (T)	Straight (t)
Tail Color	Purple (P)	Orange (p)
Teeth	Sharp (S)	Round (s)
Feet	Four toes (F)	Two toes (f)
Horn Color (Codominant)	Purple (P)	White (W)
Ear Shape	Pointy (Y)	Round (y)
Claws	Long (L)	Short (l)
Skin Color (Codominant)	Blue (B)	Yellow (Y)
Mane Texture (incomplete Dom)	Curly (M)	Straight (m)
Dragon Hemophilia (Sex- Linked)	Hemophilia (XH)	Normal Clotting (Xh)

Table 2: Genotype and Phenotypes for Daddy Dragon

Trait	Allele 1	Allele 2	Genotype	Phenotype
Eye Size & Number	Two Small (E)	One large (e)
Eye Color (incomplete Dom)	Red (R)	White (r)
Tail Shape	Curly (T)	Straight (t)
Tail Color	Purple (P)	Orange (p)
Teeth	Sharp (S)	Round (s)
Feet	Four toes (F)	Two toes (f)
Horn Color (Codominant)	Purple (P)	White (W)
Ear Shape	Pointy (Y)	Round (y)
Claws	Long (L)	Short (l)
Skin Color (Codominant)	Blue (B)	Yellow (Y)
Mane Texture (incomplete Dom)	Curly (M)	Straight (m)
Dragon Hemophilia (Sex- Linked) See below	Hemophilia (XH)	Normal Clotting (Xh)

Note: Dragon Hemophilia (Sex Linked). To determine Dad’s Genotype You only need to flip once to determine his X chromosome. Since he’s dad, we know that his second allele will be Y.

Part 3: Punnett Square Predictions for Baby Dragon (Worth up to 10pts)

You will create Punnett squares to predict the results from a cross of mom and dad’s traits. Answer the following questions based on the parents you created in Part 2.

1. Eyes: What percent of offspring will have only one eye?
2. Eye Color: What percent of offspring will have pink eyes?
3. Tail Shape: What are the possible genotype(s) of your offspring?
4. Tail Color: What are the possible phenotypes of your offspring?
5. Teeth: What percent of offspring will have round teeth?
6. Feet: What are the probability of having an offspring with two-toes?
7. Horn Color: What are the possible phenotypical outcomes for your offspring? (Remember Codominant)
8. Ear Shape: What percent of offspring will have pointy ears?
9. Mane Texture: What would the phenotype be for an offspring that has the Mm genotype?
10. Dragon Hemophilia: What is the probability that Mama and Daddy Dragon will have
11. A male with hemophilia
12. A female with hemophilia

Add a Family Picture of Mama Dragon, Daddy Dragon and Baby Dragon based on YOUR Punnett results.

(Note: Draw a picture and upload it into this document- Worth up to 5pts)

Analysis Questions (Worth up to 3.75pts each)

1. Give 2 ways that Codominance and Incomplete Dominance are different.
2. Is it possible for a woman who is homozygous dominant for normal blood clotting and a hemophilic man to have a son who has hemophilia? Why or why not? (Hint: Hemophilia is a sex-linked trait.)
3. Could a father with type A and a mother with type B blood have a child who has type O blood? Explain your answer.
4. Colorblindness is an X chromosome sex-linked disorder. If a colorblind male mates with a normal vision female
5. What percentage (if any) of boys would be colorblind?
6. What percentage (if any) of girls would be carriers of the colorblind allele?

Match (Worth 1pt each)

5. Heterozygous
6. Homozygous
7. Dominant
8. Recessive
9. Allele
10. Genotype
11. Phenotypes
12. Two or more alternative forms of a gene that occupy the same locus on a chromosome
13. The physical trait that is expressed (can be seen)
14. Two copies of the same allele
15. The allele that is completely expressed
16. The allele that is typically only expressed when partnered with an identical allele
17. The genetic outcome obtained from parents; one from each parent
18. Two different forms of an allele

Dragon Genetics Hands on Lab

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