4. A pea plant heterozygous for pod color is crossed with a pure green-pod plant. Show the cross and all the phenotypic and genotypic ratios of the possible offspring. Genotypic Ratio: Phenotypic Ratio:
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- 11:42 ll Cancel Markup Done Name: Date: Monohybrid practice problems In pea plants, the traits below exhibit the following dominance patterns: Recessive Expression: Wrinkled Dominant Expression: Round Purple |Yellow Inflated Green Trait: 1. Seed shape (R) 2. Flower color (P) 3. White Green |Constricted Yellow Terminal Short Color of seed coat (Y) Form of ripe pods (I) 4. 5. |Color of unripe pods (G) 6. Position of flowers (A) 7. Length of stem (T) Axial Tall Record the genetvnes f-Der-- = foltrawino deserintins (The first one has been done for you): а. дg A plant with yellow poás- EplancteOZygous for ereen pods N 0)e Owers С. A plant homozvaoue ycilow seeds A plant with white flowers TA piamt wilh areen seeds. Complete the Punnett Squae showing the eress between a pea plant wth pure round seeds and a plant with wrinkled seeds. Summanze the phenotypes and genotypes for the offspring. Genolynic PorcentagCS. Parental cross PhenolypicPerceniageS 3. A pea plant with pure yellow seeds is…11:42 ll Cancel Markup Done Name: Date: Monohybrid practice problems In pea plants, the traits below exhibit the following dominance patterns: Recessive Expression: Wrinkled Dominant Expression: Round Purple |Yellow Inflated Green Trait: 1. Seed shape (R) 2. Flower color (P) 3. White Green |Constricted Yellow Terminal Short Color of seed coat (Y) Form of ripe pods (I) 4. 5. |Color of unripe pods (G) 6. Position of flowers (A) 7. Length of stem (T) Axial Tall Record the genetvnes f-Der-- = foltrawino deserintins (The first one has been done for you): а. дg A plant with yellow poás- EplancteOZygous for ereen pods N 0)e Owers С. A plant homozvaoue ycilow seeds A plant with white flowers TA piamt wilh areen seeds. Complete the Punnett Square showing the eress between a pea plant with pure round seeds and a plant with wrinkled seeds. Summanze the phenotypes and genotypes for the offspring. Genolynic PorcentadCS. Parental cross PhenolypicPerceniageS 3A pea plant with pure velow seeds is…21:09 Thu Oct 12 X Ĵ 00 Lecture Notes Progeny Phenotype SUT] sut SuT ... sut SUt sUt SUT Sut *Fine spines (s), smooth fruit (t), and uniform fruit color (u) are recessive traits in A cucumber that is cucumbers whose genes are linked on the same chromosome. heterozygous for all three traits is used in a testcross, and the following progeny are produced: Number of Progeny. 2 70 21 4 82 21 13. 17 230 a. Determine the order of the genes on the chromosome. 5. Linkage Practice Problems ✓ b. Calculate the map distance between the genes. Σ c. Determine the coefficient of coincidence and interference. 47% ů d. List the alleles found on the chromosome of the homozygous parents of the heterozygous plant used in the testcross. B
- AaBbCcDdEe AaBbCcDc AaBbCcDdEe AaBb( AaBbccDdEe AaBbCcDdEe AaBbCcDd. x, x A I v Av Normal No Spacing Heading 1 Heading 2 Title Subtitle Subtle Emp In tomatoes, red fruit (R) is dominant over yellow fruit (r) and tall plant (T) is dominant over short plant (t). A plant that is heterozygous for both traits is crossed with a plant that is homozygous recessive for both traits. What is the genotype and phenotype of the offspring? Saguaro cacti are very tall cylindrical plants that usually have two L-shaped arms, one on each side. Suppose you live in southern Arizona where the Saguaro cactus is common, and you happen to have one growing in your yard. Your Saguaro has two arms, but one is longer than the other. Now, assume that arm length in these cacti i controlled by a single gene with arms of the same length (A) being dominant to arms of different lengths (a). What is the genotype of your cactus? Could one of the parents of your cactus have had a phenotype with arms actuscross? l .oloo besa bns bgene bosa itiod tot 2uo9 beineo evieso01 ed) fol elells erti ale ouahetosedo egsda Inonerice JInenmob d 6. You cross a purple flowered plant with a white flowered plant. If the purple flowered plant is homozygous, what is the expected percentage of plants in the F1 that have white flowers and/or purple flowers? If you cross a heterozyote purple flowered plant with a white plant, what percentage of the F1 will be white? nsleri ai insla oeq A Srenoa 7. The following amino acid sequence represents part of a protein. The normal sequenceName: Date: Monohybrid practice problems In pea plants, the traits below exhibit the following dominance patterns: Dominant Recessive Expression: Round Purple Yellow Inflated Green Trait: Expression: Wrinkled Seed shape (R) Flower color (P) Color of seed coat (Y) 1 White Green Constricted Yellow Terminal Short 2. 3. 4. Form of ripe pods (I) Color of unripe pods (G) Position of flowers (A) 7. Length of stem (T) 5. 6. Axial Tall 1. Record the genotypes for pea plants with the following descriptions (The first one has been done for you): a. gg A plant with yellow pods A plant homozygous for round seeds A plant homozygous for yellow seeds A plant with green seeds A plant heterozygous for green pods A plant heterozygous for purple flowers A plant with white flowers A short pea plant е. b. f. C. g. h. d. 2. Complete the Punnett Square showing the cross between a pea plant with pure round seeds and a plant with wrinkled seeds. Summarize the phenotypes and genotypes for the offspring. Parental…
- 97 Assume that the trihybrid cross MM SS tt X mm ss TT is made in a plant species in which Mand S are dom- inant but there is no dominance between T and t. Consider the F2 progeny from this cross, and assume independent assortment. (a) How many phenotypic classes are expected? (b) What is the probability of genotype MM SS t? obib (c) What proportion would be expected to be 15 2nod bolleo homozygous for all genes? ablla Insninmobo.(omActivity 4 Identification of phenotype of known genotype The characteristic of the color of the red tomato fruit (R) is dominant over the characteristic of the yellow color (r) The characteristic of the color of white flowers (W) is dominant over the characteristic of the color of the yellow flowers (w), and the characteristic length of the stem of the plant (T) is dominant over the short characteristic (t) If a red fruit plant with yellow and long-stemmed flowers is crossed, with anotheryellow, white-flowered and short-stemmed plant, knowing that the dominant characteristic is pure. What is the phenotype of individuals of the resulting generation?TOPIC: GENE INTERACTION AND EPISTASIS Two pure-breeding (homozygous) lines of shrubs were crossed as follows: P1 phenotype red leaves X green leaves P1 genotype ___________ _____________ F1 phenotype 100% green leaves with white flecks F1 genotype ___________ Crossing the F1s produced: F2 phenotypes F2 genotypes 123 green leaves w/ white flecks ____ 44 green leaves ____ 63 red leaves ____
- 11:52 and ry bod es loc he al alle omi Tomo tted es, wh Show cemplete nis ne n the type ratios for each generatio pes an Other problems: How do you know the genotype of organisms with a dominant phenotype? Is it homozygous or heterozygous? 8. A pea plant exhibits a purple color, but you are unsure of its genotype. With what could you cross this plant to determine its genotype? Show all of your work for the cross. What is this type of cross called? Incomplete dominance: Genes code for the production of specific proteins, many of which are enzymes. Different alleles at a locus code for alternative forms of a protein that differ in structure and when the protein is an enzyme, often have different degrees of catalytic activity. Therefore, a heterozygote genotvpe produces an intermediate phenotype.ces Edit e 9. In the F2 Generation, both the male and female pea plants are heterozygous for round/wrinkles seeds. 1)Draw a Punnett square that shows this cross. 2)What are the enetics... possible genotypes? 3)What are the possible phenotypes? 10. In pea plants, the allele for smooth pods (P) is dominant over the allele for pinched pods (p). Construct a Punnett Square that shows a cross between an PP plant and an Pp plant. Predict what percent of the offspring are likely to have smooth pods.TOPIC: GENE INTERACTION AND EPISTASIS In pineapples, leaves may be spiny, spiny-tipped or piping. Pineapples of different phenotypes were used in the following crosses: P1 phenotype piping X spiny P1 genotype ______ ______ F1 phenotype 100% piping F1 genotype ______ Crossing the F1s produced: F2 phenotypes F2 genotypes 95 piping _______ 25 spiny tipped _______ 8 spiny _______