A spotted gerbil (C) with short fur (F) is crossed with an albino gerbil (c) with long fur (f). The spotted, short-furred offspring are crossed with an albino (c) long-fur (f). A) What types of offspring and in what proportions would you expect if the two genes were unlinked? B) What would you expect if they were linked and 30 m.u. apart?

A spotted gerbil (C) with short fur (F) is crossed with an albino gerbil (c) with long fur (f). The spotted, short-furred offspring are crossed with an albino (c) long-fur (f). A) What types of offspring and in what proportions would you expect if the two genes were unlinked? B) What would you expect if they were linked and 30 m.u. apart?

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

See similar textbooks

Similar questions

Two alleles of gene C control hair color in horses: C¹and C². Horses homozygous for allele C¹ are red, heterozygotes are yellow, and C² homozygotes are cream. In the offspring of matings between heterozygotes, what phenotypic ratio is expected? A) 2 yellow: 1 red B) 3 red: 1 cream C) 1 red: 2 yellow: 1 cream D) all red E) 9 red: 3 yellow: 4 cream
A certain polled bull was bred to three cows. With cow A, which is polled, a horned calf was produced; with cow B, which is polled, a polled calf was produced; and with cow C, which is horned, a polled calf was produced. What are the genotypes of all these four animals [bull, cow A, cow B, and cow C], and what are the possible phenotypes and genotypes of the resulting offspring that you would expect from these three mating.
One example of codominance found in animals is the speckled chicken. This organism has alleles for both black and white feathers. What is the probability that the cross between two speckled chicken will result to white feathered chicken? Explain. A) 50% B) 75% C) 25% D) 100%
ASAP PLEASE In Talons, the feral style (S) is dominant over the gladiator style (s), and green eyes (G) are dominant over yellow (g). If a Talon that is heterozygous for both traits is crossed with a Talon that is homozygous recessive for both traits, what is the predicted genotype of the offspring? A)SsGg and Ssgg B)SsGg only C)SsGg, ssgg, ssGg, Ssgg D)ssGg and ssgg only
A) He might be more likely heterozygous black B He might be more likely homozygous brown C) He must be heterozygous brown. D) He must be homozygous black E He must be homozygous brown 2-11 "Dumpy" is a commonly used mutant phenotype in the nematode wom C. elegans. Two "Dumpy individuals are crossed to each other and this cross produces 210 "Dumpy" and 68 wild-type individuals. If one of the "Dumpy" individuals used in this cros5 was mated with a wild-type, what ratio of "Dumpy" wild-type would we observe in the offspring? A) 0:1 B) 1:0 C) 1:1 D) 1:3 E) 3:1 2-12 If genes assort independently, a testcrossed dihybrid characteristically produces progeny phenotypes in the ratio: A) 1:1 B) 1:1:1:1 c) 1:2:1 D) 3:1 E) 9:3:3:1 2-13 A fish of genotype a/a; B/b is crossed to a fish whose genotype is 4/a; B/b. What proportion of the progeny will be heterozygous for at least one of the genes? (Assume independent assortment.) A) 1/8 B) 1/4 C) 1/2 D) 5/8 E) 3/4 2-14 In hogs, a dominant allele B…
Your internship with Dr. Nefario at Gru Industries is going well so far, but a recent mission to obtain a shrink ray requires a special kind of Minion. You identify that the ideal Minion phenotypes for this mission are two eyes, pale yellow, and short. From your previous work, you’ve found that:Two-eyed (D) is completely dominant over one-eyed (d)Yellow (Y) is incompletely dominant with white (y)Tall (T) is completely dominant over short (t) a. The only reproductive individuals you have at the moment (it was surprise mission!) are a true breeding two-eyed, yellow, short Minion and a one heterozygous for each trait. What genotypic ratios would you expect for this crossassuming that each locus is on a different chromosome? What total proportion would you expect to be the desired phenotype for the mission? b. The mission has since been delayed due to lack of financial support, so you’ve got some time. All the individuals from the F1 cross above are now reproductive. Which genotypes would…
3) Short tail length in cattle is caused by an X-linked recessive allele. Roan coat colour of cattle is due to co-dominance (other coat colours are red and white). a) Show the results of a cross between a bull which has a roan coat and a short tail and a white cow which is heterozygous long tail. b) What percentage of male calves will have a red coat and a short tail?
Fill the blank Combinatorial strategies at the DNA level and RNA level,as well as __________ modifications of proteins,allow the production of highly diversified gene productseven from a single gene
In sheep, coat color is influenced by two genes. Gene A influences pigment production, while gene B produces black or brown pigment. If two heterozygous white sheep resulted in 12 white sheep, 3 black sheep, and 1 brown sheep, which genotype(s) of the white sheep explain this data? A) The white sheep could be A-B- or aaB-. B) The white sheep could be A_B_ or aabb. C) The white sheep could be A_B_ or A_bb. D) The white sheep must all be aabb. E) The white sheep must all be A_B_.
12. A heterozygous black mouse is crossed with a white mouse. a) Which color is dominant? b) How did you know? c) Which letter will stand for the dominant color? d) Which letter will stand for the recessive color? e) What is the genotype of the white mouse? f) What is the genotype of the heterozygous black mouse? g) Complete the Punnett Square below for this cross. h) What percent of the offspring will be black?
You cross two yeast strains one is an ade auxotroph the other is a pro auxotroph and allow the diploid to sporulate. When you score each spore in the ascus you find the following proportions: 518 PD, 8 NPD, and 225 T. a.) What are the genotypes of each spore in all three types of the tetrads. b) Are these genes linked why or why not? c.) If these genes are unlinked what would you expect the progeny numbers and ratios to be? d.) What is the formula to determine the most accurate distance between these genes? If linked what is the map distance?
In the fungus Neurospora, a strain that is auxotrophic for thiamine (mutant allele t) was crossed with a strain that isauxotrophic for methionine (mutant allele m). Linear asci were isolated and classified into the following groups: a. Determine the linkage relations of these two genes to their centromere(s) and to each other. Specify distances in map units. b. Draw a diagram to show the origin of the ascus type with only one single representative (second from right).