When a dihybrid cross of two heterozygous individuals is performed and you observe a ratio of 9:3:3:1, then the 9 refers to which phenotypic category? O dominant phenotype in both genes O a dominant phenotype in one gene and a recessive phenotype in the other O recessive phenotype in both genes
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- In sweet pea plant, an allele for purple flowers (P) is dominant when paired with a recessive allele for red flowers (p). An allele for long pollen grains (L) is dominant when paired with a recessive allele for round pollen grain (l). Bateson and Punnett crossed a plant having purple flowers/long pollen grains with one having white/flowers/round pollen grains. All F1 offspring had purple flowers and long pollen grains. Among the F2 generation, the researchers observed the following phenotypes: 296 purple flowers/long pollen grains 19 purple flowers/round pollen grains 27 red flowers/long pollen grains 85 red flowers/round pollen grains What is the best explanation for these results?Red-flowering snapdragons are homozygous for allele RI. White-flowing snapdragons are homozygous for a different allele (R2). Heterozygous plants (R1 R2) bear pink flowers. What phenotypes should appear among first-generation offspring of the crosses listed? What are the expected proportions for each phenotype? a. R1R1 R1R2 b. R1R1 R2R2 c. R1R2 R1R2 d. R1R2 R2R2VHO Has typ D VIO0a ana a Wom What would be the expected phenotypes (in percent) of their children? In fruit flies, a gene that controls eye color is X-linked. Red eyes are dominant to the allele for white eyes. What 3) are the expected offspring phenotypes (in percent) if a heterozygous red-eyed female is crossed with a white- eyed male? d man with normal 11 1 woman m
- In a dihybrid cross of two heterozygous individuals, you expect a 9:3:3:1 phenotypic ratio in the offspring, but observe a ratio of 9:7. What is the most likely explanation? O Codominance O It is a sex-limited trait O Simple Mendelian inheritance O Incomplete penetrance O Epistatic interaction of the two geneswhen two unlike alleles are responsible for a sin O b. Genetic characters are controlled by pairs of alleles, of which each diploid organism received from each p O c. Two sets of traits are inherited independently ofeach other. O d. If an individual contains a pair of like alleles then all its gametes receive one of that same kind of allele. How many different types of gametes can be formed by individuals of the following genotypes respectively? (a) AaBb, (b) AaBbCc Select one: O a. 2, 4 Оь. 4, 16 O c. 2, 8 O d. 4, 8 O e. 4, 4 Genetics characters that follow partial dominance produce an offspring ratio that corresponds directly to Mendel's p Select one: оа. TrueAlbino rabbits (lacking pigment) are homozygous forthe recessive c allele (C allows pigment formation).Rabbits homozygous for the recessive b allele makebrown pigment, while those with at least one copy ofB make black pigment. True-breeding brown rabbitswere crossed to albinos, which were also BB. F1 rabbits, which were all black, were crossed to the doublerecessive (bb cc). The progeny obtained were 34black, 66 brown, and 100 albino.a. What phenotypic proportions would have beenexpected if the b and c loci were unlinked?b. How far apart are the two loci?
- D Question 2 Meiasis i is a Meiosis Il is a O wdartiora dirvininn recuctonai chvis ion O ruductiaral diuisian, wustional eivis on O pantiaral divniun edurtional divivnn O Meptiaral divisian uational divivenCH 1-4 X с Maya S x Credib x app.wizer.me/learn/00E0AB wizer.me a Maya X A To-do 25% The table gives the genoty Assign x M Dashb x 50% Figurat X C In cows, brown (B) is codominant with white (W). The heterozygous phenotype is brown and white speckles. A farmer decided to cross a brown cow and a white cow in hopes of making all brown and white speckles. What percentage of the offspring will be brown with white speckles? Figurat X 75% Dashboard Incomp X d Interac X Enter class code Go 100%non OBYTOT SEI deutet bos nuol 3. Based on the total number of kernels of corn you counted, calculate the expected number for each phenotype if the parents of this corn were both RrTt. Show how you calculate these numbers below and en transfer them to the observation table (155 Kernels) then INO 4 4. Using chi-square analysis to compare the actual phenotype and expected phenotype numbers determine if you can statistically accept that both parents have the genotype RrTt. Your chi square data will be recorded to helow. nb number) which allows for
- A botanist has acquired agroup of sweet pea plants. Allef the plants have yellow pea pods he recessive trait, ecept for one, which has green pea pods he deminant trat. Pe pod color is a trait cused by asingle gene. n thistutorial, you wil determine hew the botanist can identify the genotype of the green pea pod, and how this relates to Mendel's l and meios There are two pods of peasa geen one dominant trait and a yellow one ecesse t A How could the botanist best detemine wether the gentyoe of the preen pod planthemane or heterorygous? A Cross the green pod plantwith he geenpod plant a Cross the green pod plant witha yellowpod plant. C Self polinate the green pod pant Punnett squares can be used to predet the bwo possible outcomes of the botanist's test eros, In the space below, diagrem the result if the nnown plant hemonveous (GG) and denote the expected phenotypes. Then diagram the resuit ifthe uninen plent s heterongous and denata the pected phenotypesPhenotype Genotype Wide bands BB medium Bands Bb narrow bands bb Phenotype Genotype Complete Washing WW half washing Ww No washing ww If a raccoon with a wide tail band that washes only some of its food is crossed with a raccoon with a narrow tail band that doesn’t wash any food, what percentage of their offspring would be medium-tailed and washes all its food? Show COMPLETE cross.A wild-type fruit fly (heterozygous for gray body color andred eyes) is mated with a black fruit fly with purple eyes. Theoffspring are wild-type, 721; black purple, 751; gray purple, 49;black red, 45. What is the recombination frequency betweenthese genes for body color and eye color? Using informationfrom problem 3, what fruit flies (genotypes and phenotypes)would you mate to determine the order of the body color, wingsize, and eye color genes on the chromosome?
