Week 5 Assignment: Monsters Genetic Lab
Week 5 life science
Having Trouble Meeting Your Deadline?
Get your assignment on Week 5 Assignment: Monsters Genetic Lab completed on time. avoid delay and – ORDER NOW
Week 5 Midweek Assignment: Monsters Genetic Lab
Predicting Genotype and Phenotype and Using Punnett Squares
Background
Punnett squares are used to predict the genotypes and phenotypes of offspring from a parent cross. Genotypes represent the alleles (the actual genetic makeup), and phenotypes are the expression of the alleles (the appearance). There are several types of inheritance patterns, but this activity focuses on three. Complete dominance is the inheritance pattern which results in the expression of the dominant phenotype as long as one dominant allele is present. For example, if tall (T) plants are dominant to short (t) plants, the TT genotype and the Tt genotype both result in tall plants. The tt genotype would result in short plants. Most genes follow this pattern. Incomplete dominance results in a phenotype that is intermediate between the dominant and recessive phenotype when an individual is heterozygous. For example, in snapdragons, red (R) flowers have incomplete dominance over white (R’) flowers. A genotype of RR results in red flower, R’R’ results in white flowers, and RR’ (heterozygous) results in pink flowers. Codominance allows expression of both alleles. For example, in blood type, A and B are codominant to O. An individual with one A allele and one B allele has AB blood type because neither allele is dominant over the other. They are both expressed.
Procedure
There are three parts to this lab. Follow the directions carefully for each part, filling in the data tables as you work through each section.
In Part One, you use a coin to determine the genotype for the female monster. In Part Two, you determine the genotype or phenotype for the traits of the male monster. Finally, in Part Three, you cross your female and male monsters to produce offspring and use Punnett squares to determine their traits.
Part One
1. Flip a coin twice to determine the genotype for each trait and record it in the data table on the next page.
a. Heads = allele 1, Tails = allele 2
b. ( Example: if you flipped heads twice, your monster would have two copies of allele 1 for his genotype. Look ahead to Table 2 to see what a partially filled out table looks like. )
2. Determine the phenotype resulting from the allele pair for each trait.
3. Repeat steps 1?2 for each trait and complete Table 1 for female monster.
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)
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)
Claws Long (L) Short (l)
Part Two
Fill in the missing genetic information in the table for the male based on the alleles used for the traits as found in Table 1.
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
Teeth Round
Feet (incomplete) FF’
Horn Color ww
Ear shape yy
Claws Short
Part Three
The female monster (described in Table 1) and the male monster (described in Table 2) plan to have baby monsters. They are interested in finding out the probability that their offspring will have each trait by using Punnett squares.
Here is a YouTube video that explains Punnett squares and how they are used to predict the outcomes of genetic crosses. Monohybrids and the Punnett Square Guinea Pigs (06:27)
Example: based on the video.
Hairiness Hairy Guinea Pig
H h
Hairless
Guinea Pig h Hh hh
h Hh hh
In this case, there is a 50% chance of having a hairy guinea pig for the offspring since two of the four squares would have the hairy phenotype. (1 square would be 25%, 2 squares 50%, 3 squares 75%, and 4 squares 100%)
Fill in the Punnett squares to predict what traits would result from a cross between the two monsters for each trait and answer the questions.
1. Eyes – What percent of offspring will have only one eye?
EYES Male Genotype
Female
Genotype
2. Eye Color – What percent of offspring will have red eyes?
EYE COLOR Male Genotype
Female
Genotype
3. Skin Color – What percent of offspring will have green skin?
SKIN COLOR Male Genotype
Female
Genotype
4. Tail – What percent of offspring will have a tail?
TAIL Male Genotype
Female
Genotype
5. Feet – What percent of offspring will have three toes?
FEET Male Genotype
Female
Genotype
6. Horn Color – What percent of offspring will have purple horns?
HORN COLOR Male Genotype
Female
Genotype
7. Ears – What percent of offspring will have ears?
EARS Male Genotype
Female
Genotype
8. Claws – What percent of offspring will have long claws?
CLAWS Male Genotype
Female
Genotype
image1.jpg
Explanation & Answer
Our website has a team of professional writers who can help you write any of your homework. They will write your papers from scratch. We also have a team of editors just to make sure all papers are of HIGH QUALITY & PLAGIARISM FREE. To make an Order you only need to click Order Now and we will direct you to our Order Page at Litessays. Then fill Our Order Form with all your assignment instructions. Select your deadline and pay for your paper. You will get it few hours before your set deadline.
Fill in all the assignment paper details that are required in the order form with the standard information being the page count, deadline, academic level and type of paper. It is advisable to have this information at hand so that you can quickly fill in the necessary information needed in the form for the essay writer to be immediately assigned to your writing project. Make payment for the custom essay order to enable us to assign a suitable writer to your order. Payments are made through Paypal on a secured billing page. Finally, sit back and relax.