Assume that birds with the genotype L L have blue feathers, and those who have at least one paramutagenic epiallele (L+) have yello- feathers. Determine how many offspring will have blue feathers in a cross between a L+L bird and a L L bird. 50% of the offspring will have blue feathers. 75% of the offspring will have blue feathers. O 50% of females will have blue feathers O0% of the offspring will have blue feathers. 100% of the offspring will have blue feathers. 25% of the offspring will have blue feathers
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- More Crosses with Pea Plants: The Principle of Independent Assortment Determine the possible genotypes of the following parents by analyzing the phenotypes of their children. In this case, we will assume that brown eyes (B) is dominant to blue (b) and that right-handedness (R) is dominant to left-handedness (r). a. Parents: brown eyes, right-handed brown eyes, right-handed Offspring: 3/4 brown eyes, right-handed 1/4 blue eyes, right-handed b. Parents: brown eyes, right-handed blue eyes, right-handed Offspring: 6/16 blue eyes, right-handed 2/16 blue eyes, left-handed 6/16 brown eyes, right-handed 2/16 brown eyes, left-handed c. Parents: brown eyes, right-handed blue eyes, left-handed Offspring: 1/4 brown eyes, right-handed 1/4 brown eyes, left-handed 1/4 blue eyes, right-handed 1/4 blue eyes, left-handedIn 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?VHO 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
- 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?In wild cats, long tails (L) are dominant to bobtails (l). Which genotype(s) give a long-tailed cat? LL ll Ll In Aardvarks, straight hair (S) is dominant to curly hair (s). Two heterozygous Aardvarks (male and female) mate and produce four beautiful offspring. Fill in the Punnet Square below with the correct genotypes of the offspring from this cross. Ss X Ss Set up the Punnett Square for the monohybrid cross that is listed below. The trait being studied is round seeds (dominant) and wrinkled seeds (recessive). Rrx rr In Smileys, eye shape can be starred (SS), circular (CC), or a circle with a star (CS). CC SS CS Imagine a cross between a circle eyed and a circle-star eyed. CC x CS What percentage of the offspring will be circle eyed? What percentage of the offspring will be circle-star-eyed? What percentage of the offspring will be starred eyed? In humans,…feeve uld eved lliw en isnebi l Hiwi shi Seeye euld eved lliw erde 1o erd ,lemetst ai niwi nerth ino AaBbC X AaBbCc, niwt1er would be the probability of offspring with: 4. Based on the mating a.) either the phenotype A-bbC- or the genotype aaBBCC? b.) the genotype AABBCC or the genotype AaBbCc?
- when 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. TrueFlower color in snapdragons is an incompletely dominant trait; progeny of crosses between true- breeding red- and white-flowered plants have pink flowers. A cross between two snapdragon plants yielded progeny with all 3 flower colors. What can be inferred about the phenotypes of the parents? O We cannot infer the phenotypes of the parents Both parents had red flowers O One parent had red flowers and the other had white flowers O Both parents had pink flowers O Both parents had white flowersPhenotype 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.
- The presence of horns on satyrs is produced by a sex-influenced autosomal gene that is dominant in males and recessive in females. A horned female is crossed with a hornless male. The F1 are then intercrossed to produce the F2. What proportion of the F2 generation will be horned? O % of the males and none of the females O % of males and % of females O All of the males and none of the females O % of the males and % of females O ½ of the males and none of the femalesAlbino 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?In pea plants, green pod color dominates yellow pod color. If a pea plant with yellow pods is crossed with a pea plant heterozygous for pod color , what percentage of the offspring will have yellow pods? E a plain how you arrived at your convlu