9. Please work out this Di-Hybrid cross and show all your work. Find the phenotypic and genotypic ratios of the offspring. What is the probability of producing a guinea pig with white & smooth fur? a. Male is homozygous dominant for both traits b. Female is homozygous recessive for both traits Trait Key for Fur Color & Fur Texture of Guinea Pigs: B= Black fur b= White fur R= Rough fur r= Smooth fur 10.In pigeons the checkered pattern is caused by a dominant allele. A plain (non-checkered) pattern is recessive. Red color is also caused by a dominant allele and brown color by a recessive allele. Cross 2 pigeon parents, which are heterozygous for both traits and determine the phenotype of the probable offspring. (Explain how you acquired your answer) 11.Bonus Question (extra credit): a. A plain brown female pigeon laid five eggs. The young turned out to be: 2 plain red, 2 checkered red, and 1 checkered brown. Describe the father pigeon. Give the genotypes of all birds in this cross. Could any other types of offspring have been produced by this pair?

9. Please work out this Di-Hybrid cross and show all your work. Find the phenotypic and genotypic ratios of the offspring. What is the probability of producing a guinea pig with white & smooth fur? a. Male is homozygous dominant for both traits b. Female is homozygous recessive for both traits Trait Key for Fur Color & Fur Texture of Guinea Pigs: B= Black fur b= White fur R= Rough fur r= Smooth fur 10.In pigeons the checkered pattern is caused by a dominant allele. A plain (non-checkered) pattern is recessive. Red color is also caused by a dominant allele and brown color by a recessive allele. Cross 2 pigeon parents, which are heterozygous for both traits and determine the phenotype of the probable offspring. (Explain how you acquired your answer) 11.Bonus Question (extra credit): a. A plain brown female pigeon laid five eggs. The young turned out to be: 2 plain red, 2 checkered red, and 1 checkered brown. Describe the father pigeon. Give the genotypes of all birds in this cross. Could any other types of offspring have been produced by this pair?

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter12: Mendel, Genes, And Inheritance

Section12.2: Later Modifications And Additions To Mendel’s Principles

Problem 2SB: A true-breeding rabbit with agouti (mottled, grayish brown) fur crossed with a true-breeding rabbit...

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delian Genetics Practice ns Help Accessibility Last edit was 22 minutes ago al BIUA = 三 12 一 · 2 L.. 3 .. | DU. DIUWIT cycs bb: Blue eyes hh: Curly hair Directions: Complete the following monohybrid practice problems. 1. Black fur (B) in guinea pigs is dominant over white fur (b). Find the probability of a black offspring in a cross: bb x bb. (Remember to draw out a punnett square!) 25% homozygous ressecive 2. In fruit flies, red eyes are dominant (E), and white-eyes are recessive (e). A female fly has white eyes, and the male fly is homozygous dominant for red eyes. Use a Punnett Square to prodict tho mort likoly nhonotunic ratio and gonotunic II lili 日日

. An allele A that is not lethal when homozygous causes rats to have yellow coats. The allele R of a separate gene that assorts independently produces a black coat. Together, A and R produce a grayish coat, whereas a and r produce a white coat. A gray male is crossed with a yel-low female, and the F1 is 3 8 yellow, 3 8 gray, 1 8 black, and 1 8 white. Determine the genotypes of the parents.
1. Complete the Punnett square for a cross between a homozygous red-flowered snapdragon (RR) and a homozygous white-flowered snapdragon (WW). Give the ratio for the phenotype and the genotype. Key F1 Genotypic Ratio: RR – red Phenotypic Ratio: wW- white RW- pink 2. Complete the Punnett Square for a cross between two Fi plants (WW). Give the phenotypic ratio for the F2 generation. F2 Phenotypic ratio: 3. Cite some possible applications of genetics to plant breeding.
1. A cow is heterozygous for three genes (WwPp) where W-White, w-Brown, P-Polled, p-Horned. Give the phenotypic and genotypic ratio of their offspring if the cow is inter se mated. 2.A male Sahiwal (RRHH) is crossed with a female Angus (Rrhh). Where R-Red, r-Brown, H-Horned, h-polled. Give the phenotypic and genotypic ratio of their offspring.
3. Set up a Punnett square using the following information: Dominate allele for normal coat color in wolves = N Recessive allele for black coat color in wolves = n Dominant allele for brown eyes = B Recessive allele for blue eyes = b Cross a heterozygous dominant parent with a homozygous recessive parent. Using the Punnett square above: a. What is the probability of producing a wolf with a normal coat color with brown eyes? Possible genotype(s)? b. What is the probability of producing a wolf with a normal coat color with blue eyes? Possible genotype(s)? c.What is the probability of producing a wolf with a black coat with brown eyes? Possible genotype(s)? d. What is the probability of producing a wolf with a black coat with blue eyes? Possible genotype(s)?
O e. Parent 2: Parent 1: Parent 2: ¡Ai QUESTION 9 Bi QUESTION 8 Let's assume that, in dragons, red scales (B) are dominant to green scales (b), and long tongues (S) are dominant to short tongues (s). The genes that determine these characteristics assort independently. A homozygous red, long-tongued dragon is crossed with a homozygous green, short-tongued dragon. If an F1 dragon is crossed to a homozygous green and homozygous short-tongued dragon, what phenotypes and proportions are expected in the offspring? O a. 100% green and long-tongued O b. ½ green and short-tongued & ½ red and long-tongued O c. ½ red and short-tongued & ½ green and long-tongued O d.% red and long-tongued, % red and short-tongued, ½ green and long-tongued, % green and short-tongued O e. 9/16 red, long-tongued, 3/16 green, long-tongued, 3/16 red, short-tongued, 1/16 green, short-tongued Save and Submit to save and submit. Click Save All Answers to save all answers. 000 MacBook Air
pp A wrinkle-seeded plant (rr) is crossed with a round-seeded plant (Rr). 5. Wrinkle-Seeded Phenotype Probability (%) Plant Genotype Probability (%) r r Rr rr RR Round Seeds: r Rr rr Rr Wrinkled Seeds: rr In cats, pointed ears are dominant to round ears. A homozygous recessive cat (ee) ic hred with a heterozvaous cat (Fe) Genetics Punnett Squares novo Round-Seeded Plant 7.
PEDIGREE ANALYSIS ANSWER THE FOLLOWING QUESTIONS 1. The chart shows a family's pedigree for Hitchhikers Thumb. Is this trait dominant or recessive? 2. How do you know? 3. How are individuals III-1 and III-2 related? 4. How would you name the two individuals that have Hitchhiker"s thumb? 5. Name the 2 individuals that were carriers of Hitchhiker's Thumb. 6. Is it possible for individual IV-2 to be a carrier? Why?
3. You are studying single gene traits in peas. These are the traits you are following: Gene Symbol Alleles enistic Pairs Appeerance of Hybrid dominant ait) Seed eoler deteric Yellow pea is dominant to green Round pea is dominant to wrinkled Purple flower is dominant to white flowers Unripe pods are dominant to ripe pods Yly R/r Yellow P/p U/u ound Wrinkied Round Flower clor You cross pollen from a pea that is of genotype YyRrPpUu with ovules from a pea whose genotype is YYrrPpUU a. How many different types of gametes can the female produce? Pod color (up) b. How many different types of gametes can the male produce? C. What fraction of the progeny will be phenotypically identical the female parent? d. What fraction of the progeny will be phenotypically identical the male parent? e. What fraction of the progeny will be homozygous at all seven loci? f. What fraction of the progeny will be heterozygous at all seven loci?
2. A heterozygous black pig is mated with a homozygous black pig. What are the genotypes of the parents? Work the problem showing the possible genotypes and phenotypes of the offspring and the probabilities of each. Genotypes Phenotypes 3. A black pig is mated to a white pig. In the Fi generation there are 5 black and 5 white pigs. Give the genotypes of the parents.
Direction: Answer the following problems: 1. Predict the phenotypic ratios of offspring when a homozygous white cow is crossed with a roan bull. Illustrate using a Punnett square. 2. Complete the Punnett square for a cross between a black chicken (BB) and a white chicken (WW). Give the phenotype of the offspring in the F1 generation. Кey BB – black ww- white F1 BW – checkered Phenotype:
1. You have a line of rice that is true breeding for the recessive traits fo white rice (r) and dwarfisim (d). You cross a member of this line with an individual that is heterozygous at both loci and shows the dominant phenotypes of red grains (R) and tall height (D) yeilding the following progeny. 417 white grains-dwarf 403 red grains-tall 95 white grains-tall 85 red grains-dwarf a) what is the allelic configuration of the heterozygote? b) how far are the genes controlling grain color and plant height in (cM) c) what are the non cross over gametes d) what are the cross over gametes e) what genotype will result in white grains and tall heights (multplie answers) f) if you cross a heterozygote with the same allelic configuration as above, what is the probability that the offspring will have white grain and trall height? Give your answer to number to THREE decimal places not as a percentage (e.g 0.044