2. A tall, purple-flowered pea plant (AaBb) is allowed to self- pollinate(The recessive alleles code for short plants and white flowers). The phenotypic ratio for the resulting offspring is 9:3:3:1. What is the genotype of the plant whose phenotype appeared once out every 16 offspring(the "1" in the 9:3:3:1 ratio?

2. A tall, purple-flowered pea plant (AaBb) is allowed to self- pollinate(The recessive alleles code for short plants and white flowers). The phenotypic ratio for the resulting offspring is 9:3:3:1. What is the genotype of the plant whose phenotype appeared once out every 16 offspring(the "1" in the 9:3:3:1 ratio?

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter4: Pedigree Analysis In Human Genetics

Section: Chapter Questions

Problem 19QP: Analysis of X-Linked Dominant and Recessive Traits Suppose a couple, both phenotypically normal,...

See similar textbooks

Similar questions

selves in the offspring. The crosses are lled ssed differently in homozy- heterozygous individuals. This produces a con- dition called incomplete dominance. In such cases, both worked out in the same manner as indicated previously, but heterozygous offspring exhibit a phenotype interme- diate between that of the homozygous individuals. Some examples follow. Activity 2 Working Out Crosses Involving Incomplete Dominance 1. The inheritance of flower color in snapdragons illustrates the principle of incomplete dominance. The geno-type RR is expressed as a red flower, Rr yields pink flowers, and rr produces white flowers. Work out the following crosses to determine the expected phenotypes and both genotypic and phenotypic percentages. % of each phenotype: 2. In humans, the inheritance of sickle cell anemia/trait is deter- mined by a single pair of alleles that exhibit incomplete domi- nance. Individuals homozygous for the sickling gene (s) have sickle cell anemia. In double dose (ss), the…
into a power outlet. Close Required information A heterozygous tall pea plant is allowed to self-fertillize. The resulting F1 progeny are 25% homozygous tall, 50% heterozygous tall, and 25% dwarf. If all of the F1 plants are allowed to self-fertilize, what percentage of their combined F2 progeny are heterozygous tall? Multiple Choice 37.5% 75% 25% 50% Show All MacBook Air
Determining Gene Order 1. We want to map the distance between genes E (tall height), B (blue flower color), and G (thick stalk). Each geen has a recessive allele (e= short, b= white and g= thin). (The actual configuration of the Trihybrid will be deduces as a part of the process) A. Your testcross genotypes will be (use slash notation). Female: ______ Male:______ Based on these results, are the genes linked or not? _______
INCOMPLETE DOMINANCE. All of the traits in these problems show incomplete dominance. Work these as you did the other monohybrid crosses, but interpret your results with the rules for incomplete dominance. 1. In snapdragons, flower color shows incomplete dominance. Red color is dominant to write color. What kind of offspring could result from Parent 1 being heterozygous and Parent 2 have a white flower color? Trait:
TUSOIES. TITCSC CIITOTIOSOTIES are iavCicu WILT UICTEIevarIC alleles. For example: to Figure 1. Showing a homologous pair of chromosomes that carry two linked genes. Here we can see that one chromosome carries A and B alleles, while the other homologous chromosome carries a and b alleles. This is much more informative than just giving the genotype of AaBb. Another way to symbolize the arrangement of alleles on a chromosome is to give the symbols for alleles on one chromosome above a horizontal line, and the symbols for the alleles on the homologous chromosome below the horizontal line. For example: B b. Figure 2. Showing the arrangement of alleles for a pair of linked genes. Here we can see that, exactly like the example in Figure 1, one chromosome carries A and B alleles, while the other chromosome carries a and b alleles. 1. Suppose that Gene G and Gene D are linked. If the genotype of an organism is GGDD, use both types of symbols you learned in Figure 1 and Figure 2 above to show…
Genetics Problems. Show your crosses. It must contain: (a) parental genes, (b) genotypic ratio, (c) phenotypic ratio, (d) hybrid cross and (e) other answer needed in the question. A. Cock-feathering in chickens is a trait limited to expression only in males and is determined by the autosomal recessive genotype hh. The dominant allele H produces henfeathered males. All females are hen-feathered regardless of genotype. A cock-feathered male is mated to a female. Show the cross.
School - Dan. AClassroom What's Your Guardi. V Authentic Italian Re YouTube ver sheet ☆回 Add-ons Help Last edit was seconds ago BIUA Times New... - 14 1 .1 2 II| 4 5 Phenotype: % Go To Next Page 4. Cross a Green flower (YB) with another green flower. Y = yellow, B = Blue. Is this a codominant or an incomplete dominance problem? What is the probability of the offspring genotypes and phenotypes? (Use a Punnett Square and make a table as seen in the problems above to give genotypes and phenotypes) Genotype: edu gear lii lilı
breeding varieties. The first breed is wild type that has black skin with brown patches. The other bree You are studying the genetic basis of ball python skin color. You have two true- has white skin with yellow patches, You would like to know if the skin color difference is due to a step of the crosses, please state your predictions based on your hypothesis. Using a diagram is fine. I X num
Changes in Chromosome Structure and Number 20. Six bands in a salivary gland chromosome of drosophila are shown here along with the extent of five deletions (Del 1 to Del 5):³ -1---2- -3------4- -6---- Del 1 Del 2 Del 3 Del 4 Del 5 Recessive alleles a, b, c, d, e, and fare known to be in this region, but their order is unknown. When wild-type individuals with the deletions are testcrossed to individuals recessive for all six genes, the following results are obtained (a minus sign indicates the wild-type allele is masking the expression of the recessive mutant allele, a plus sign indicates the recessive allele is being expressed). Use these data to infer which salivary band corresponds to each gene. b с + + + + Del 1 Del 2 Del 3 Del 4 Del 5 a + + + d + + e
Need help. Knowing that the Curly leaf (Cy) is a dominant gene on chromosome 6, as it is useful in tracking other genes using trisomics for chromosome 6. Assume a Cy Cy cy plant used as a pollen parent where disomic pollen does not function crossed to a Cy cy cy female where disomic eggs do function. A) What ratio would be predicted in the progeny of this cross? B) What if the reciprocal cross was made?
the progeny i each seehario. Q4. You conducted an experiment similar to Morgan's fruit fly but you used honey bee instead. You are thus following 2 genes, the wing size Long (L) and short (1) and body color Yellow (Y) and black (y). You crossed YyLI x yyll and obtained 4,000 offspring. You counted the offspring classes and found the following distribution as follows: 1200 YyLl individuals 1190 yyll individuals 800 Yyll individuals 810 yyLl individuals a) what is the phenotype of each class of offspring? b) Which classes are of the parental type and which are the recombinant types? c) What is the recombination frequency between both genes? d) What is the map distance in cM and in map units between both genes? When you counted the offspring, you also collected data on a third gene coding for antenna shape. The gene has 2 alleles in the population, bended antenna (B) and straight antenna (b). You found a distance of 13 cM between the gene for antenna shape and that for wing size, and 24…
parent genoty offspring genotypes. We can use this to figure out the probability of 1 How MANY HERITABLE TRAITS ARE USED IN DIHYBRID CROSS? 2. DIHYBRID CROSSES FOLLOW THE SAME RULES AS WHICH OTHER GENETIC DIAGRAM? Dunnet square S 3. How MANY OFFSPRING GENOTYPES ARE WORKED OUT IN A DIHYBRID CROSS? Emmatheteachie 2020 Dihybrid Crosses - Phenotypes LET'S CHECK IF YOU REMEMBER THE RULES FROM CREATING PUNNETT SQUARES! COMPLETE THE SENTENCES: Dominant alleles are represented with a letter. I'M THE BOS! Tt The capital letter is always written Each parent can only pass on allele for each gene. Recessive traits are only shown if both alleles are Now USE THE INFORMATION IN THE PICTURES BELOW TO WORK OUT THE PHENOTYPE FOR EACH GENOTYPE: Dominant traits Recessive traits Bubble fur (B) Spiky fur (b) Yellow body (M Pink body (y) BBYY = BbYy = Bbyy = bbYY= © Ermmotheleachie 2020