Q1. In Mendel's dihybrid cross of peas, the gene coding stem size has the dominant allele Long (L) andrecessive short allele (1). The gene for flower color has the dominant purple (P) over the recessive white(p). The 2 genes for size and flower color are located on different chromosomes.Parent P1 which genotype is LL PP is crossed with parent P2 which genotype is 11 pp.a) What are the phenotypes of P1 and P2?b) What is the genotype and phenotype of the F1 generation?c) What is the genotype of a tester that can be used with an F1 individual?d) what are the expected genotypes and phenotypes of the progeny of the cross F1 x tester?e) what is the frequency of each phenotype in the progeny of the cross F1 x tester?

Name: Q1. In Mendel's dihybrid cross of peas, the gene coding stem size has
Uploaded: 2024-03-20T06:43:04.000Z
Channel: Bartleby
Description: Q1. In Mendel's dihybrid cross of peas, the gene coding stem size has the dominant allele Long (L) andrecessive short allele (1). The gene for flower color has the dominant purple (P) over the recessive white(p). The 2 genes for size and flower colo

Gregor Mendel discovered this in 1865 due to his work on dihybrid crossings (a cross between…

Science

Biology

Q1. In Mendel's dihybrid cross of peas, the gene coding stem size has the dominant allele Long (L) and recessive short allele (1). The gene for flower color has the dominant purple (P) over the recessive white (p). The 2 genes for size and flower color are located on different chromosomes. Parent P1 which genotype is LL PP is crossed with parent P2 which genotype is ll pp. a) What are the phenotypes of P1 and P2? b) What is the genotype and phenotype of the F1 generation? c) What is the genotype of a tester that can be used with an F1 individual?

Q1. In Mendel's dihybrid cross of peas, the gene coding stem size has the dominant allele Long (L) and recessive short allele (1). The gene for flower color has the dominant purple (P) over the recessive white (p). The 2 genes for size and flower color are located on different chromosomes. Parent P1 which genotype is LL PP is crossed with parent P2 which genotype is ll pp. a) What are the phenotypes of P1 and P2? b) What is the genotype and phenotype of the F1 generation? c) What is the genotype of a tester that can be used with an F1 individual?

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

Section: Chapter Questions

Problem 13TYK: Some recessive alleles have such a detrimental effect that they are lethal when present in both...

See similar textbooks

Similar questions

Some recessive alleles have such a detrimental effect that they are lethal when present in both chromosomes of a pair. Homozygous recessives cannot survive and die at some point during embryonic development. Suppose that the allele r is lethal in the homozygous rr condition. What genotypic ratios would you expect among the living offspring of the following crosses? a. RRRr b. RrRr
The gene for flower position in pea plants exists as axial or terminal alleles. Given that axial is dominant to terminal, list all of the possible F1 and F2 genotypes and phenotypes from a cross involving parents that are homozygous for each trait. Express genotypes with conventional genetic abbreviations.
Another gene in Drosophila determines wing length. The dominant wild-type allele of this gene produces long wings; a recessive allele produces vestigial (short) wings. A female that is true- breeding for red eyes and long wings is mated with a male that has purple eyes and vestigial wings. F1 females are then crossed with purple-eyed, vestigial-winged males. From this second cross, a total of 600 offspring are obtained with the following combinations of traits: 252 with red eyes and long wings 276 with purple eyes and vestigial wings 42 with red eyes and vestigial wings 30 with purple eyes and long wings Are the genes linked, unlinked, or sex-linked? If they are linked, how many map units separate them on the chromosome?
1-Show the results of a dihybrid cross for the F1 and F2 generation between P generation of a pea plant that is homozygous dominant for purple flower and yellow pea seed with another pea plant that is homozygous recessive for white flower and green pea seed. Clearly show the cross indicating BOTH genotype and phenotype for each generation. How many offspring in the F2 generation will have these phenotypes? 2-What is the probability of a woman who is a carrier for the blood disease hemophilia producing a son with hemophilia if she marries a man who does not have hemophilia? What is the probability of her daughters having hemophilia? Explain why the probability of getting this disease is different for sons versus daughters in this case. Your work should clearly indicated sex, genotype and phenotype (carrier or affected).
11 Normal No Spac. Styles Paragraph Inheritance APPLICATION Imagine that you are interested in developing a new tomato plant that will inchude the large size and sweetness from one parent and yellow color from another parent. The first parent plant has bland-tasting small yellow tomatoes and the other parent has sweet-tasting large red tomatoes. The chromosomes and alleles of the two plants are shown below. Plant #1: Bland (B), Small (1), Yellow (r) Plant #2: Sweet (b), Large (L), Red (R) R 1 r R Think about what you learned about inheriting traits from the lab to answer these questions. 1. Explain (in sentence form) why it is or is not possible for any of the offspring of these parents to have the sweet gene expressed in its phenotype. To illustrate your explanation, you may use a diagram or use the Punnett squares below to show the genotypes of the possible offspring. Include a percent chance in your answer. 2. Explain whether or not it is possible to create a tomato plant with…
1- In garden peas, yellow (Y) seed color is dominant to green (y). Because yellow and green are two different forms of the same gene (seed color), they are alleles. Use a Punnett square to show a cross between two heterozygous pea plants. What are the phenotype(s) of the offspring? What are the genotype(s) of the offspring? 2- In garden peas, yellow (Y) seed color is dominant to green (y). Because yellow and green are two different forms of the same gene (seed color), they are alleles. Use a Punnett square to show a cross between two heterozygous pea plants. What are the phenotype(s) of the offspring? What are the genotype(s) of the offspring? Use the information below to answer questions 3-6 There may be a number of possible alleles for a given gene within a population. In a multiple allele system the dominance relationships between the various alleles must be considered. One of the more familiar examples of a multiple allelic system is that of the human ABO blood group. The gene…
. Jimsom. weed plants can produce purple or white flowers and spiny or smooth seed pods. A purple spiny plant is crossed with a white spiny plant. This cross produces: 89 purple spiny; 92 white spiny; 31 purple smooth and 27 white smooth plants. What are the genotypes of the parental plants and the progeny plants? Use the letters P/p for flower color and S/s for pod texture Parent #1 –genotype:_________________________________; Parent #2 –genotype: ______________________________ b. Offspring plants – genotypes and phenotypes c. Calculate the recombination frequency using these results_________________________________ i need help finding the right answer and i need an explation on how you got it so i understand and please do it with a punnet square and show the calutions step by step
2 Considering the Mendelian traits round versus wrinkled and yellow versus green, consider the crosses below and determine the genotypes of the parental plants by analyzing the phenotypes of their offspring. Parental Plants Offspring (a) round, yellow * round, yellow 3/4 round, yellow 1/4 wrinkled, yellow (b) wrinkled, yellow * round, yellow 6/16 wrinkled, yellow 2/16 wrinkled, green 6/16 round, yellow 2/16 round, green (c) round, yellow * round, yellow 9/16 round, yellow 3/16 round, green 3/16 wrinkled, yellow 1/16 wrinkled, green (d) round, yellow * wrinkled, green 1/4 round, yellow 1/4 round, green 1/4 wrinkled, yellow 1/4 wrinkled, green
Genetic Crosses that Involve 2 Traits In rabbits, black hair is dominant to brown hair. Also in rabbits, long straight ears are dominant to floppy ears. These letters represent the genotypes and phenotypes of the rabbits: BB = black hair EE = long ears Ee = long ears ee = floppy ears %3D %3D Bb = black hair bb = brown 1. A male rabbit with the genotype BBee is crossed with a female rabbit with the genotype bbEe The square Is set up below. Fill it out and determine the phenotypes and proportions in the offspring. How many out of 16 have black hair Ве Ве Ве Ве and long ears? bE How many out of 16 have black hair and floppy ears? be How many out of 16 have brown hair and long ears? bE How many out of 16 have brown hair be and floppy ears?
11. Perform two consecutive crosses similar to those of Mendel for the following individual plants. Plants with round seeds (RR) are crossing with plants with wrinkled seeds (rr). After the first cross, cross the offspring together to generate F, offspring. What are the genotypic and phenotypic ration of F,? Round : wrinkled 3 1 phenotypic ratio: RR: Rr: rr Genotypic ratio: 1: 2: 1 12. Perform two consecutive crosses between these two plants, GGHH x gghh, as in question #11.
Practice with Crosses. 5. A TT (tall) plant is crossed with a tt (short plant). What percentage of the offspring will be tall? 6. A Tt plant is crossed with a Tt plant. What percentage of the offspring will be short? What percentage is tall? 7. A heterozygous round seeded plant (Rr) is crossed with a homozygous round seeded plant (RR). What percentage of the offspring will be homozygous (RR)? 8. A homozygous round seeded plant is crossed with a homozygous wrinkled seeded plant. What are the genotypes of the parents? What percentage of the offspring will also be homozygous? I also What is the genotype of all of the offspring? 9. In pea plants purple flowers are dominant to white flowers. If two white flowered plants are cross, what percentage of their offspring will be white flowered? 10. A white flowered plant is crossed with a plant that is heterozygous for the trait. What percentage of the offspring will have puple flowens? 11. Two plants, both heterozygous for the gene that controls…
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