EBK LIFE: THE SCIENCE OF BIOLOGY
11th Edition
ISBN: 8220103935432
Author: Sadava
Publisher: MAC HIGHER
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Question
Chapter 12.3, Problem 3R
Summary Introduction
To analyze:
The percentage of offspring, which will be deaf in a parental cross between aaBb and Aabb, where the dominant allele A is essential for hearing and the dominant allele B leads to deafness irrespective of the other genes present.
Introduction:
The genes A and B are present on different chromosomes so they will show independent assortment. The recessive alleles will not be expressed in the presence of their dominant alleles, meaning that the dominant allele will show its
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
You have a purple-flowered pea plant, but you do not know if it is homozygous (PP) or heterozygous (Pp) for flower color
because both genotypes result in the same purple phenotype. Purple color allel (P) is dominant over white flower allel (p).
What would you do to determine the genotype of flower color of this plant?
Lötfen birini seçin:
O a.
Crossing the plant with homozygous large flowered pea plant (LL)
Ob.
Crossing the plant with heterozygous purple flowered pea plant (Pp)
Crossing the plant with homozygous dominant purple flowered pea plant (PP)
d.
Crossing the plant with a plant whose genotype is unknown
e.
Crossing the plant with homozygous recessive white flowered pea plant (pp)
In a cross between a black and a white cat, all members of the Fi generation are black. The F2
generation is made up of approximately 3/4 black and 1/4 white cat.
(i)
Diagram this cross, showing the genotypes and phenotypes of the parents, F, and F2
generations.
What is the probability that the first two offspring will be homozygous and the third is
white if an Ficat is test crossed?
In Labrador retrievers, two genes determine fur color: the E gene and the B gene. Black fur (B) is dominant to brown fur (b). However, the presence of (ee) will overshadow and create a puppy with yellow fur. Create a Punnett square crossing 2 Labs that are heterozygous for both genes. Then color code your Punnett Square based on the resulting phenotypes. Don’t forget to take epistasis into account!
Chapter 12 Solutions
EBK LIFE: THE SCIENCE OF BIOLOGY
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Pigment in mouse fur is only produced when the C allele is present. Individuals of the cc genotype are white. If color is present, it may be determined by the A, a AA or Aa results in agouti color, while aa results in black coats. What F1 and F2 genotypic and phenotypic ratios are obtained from a cross between AACC and aacc mice? (F2: intercross between F1 offspring) Explain briefly the pattern of inheritance in this problem set and how you determined the phenotypic ratios in the offspring.arrow_forwardIn corn plants, two pairs of genes control color in the ears of corn. The following genotypes result in various colors: W-C- [red]; wwC- [yellow]; W-cc [white]; wwcc [white]. What is the phenotypic ratio of the dihybrid cross between corn plants heterozygous for both genes? (Dashes mean the allele could be W or w)arrow_forwardIn cattle, coat color is inherited in a co-dominant fashion. Homozygous C R C R produces red coat,homozygous C W C W produces white coat, and the heterozygous C R C W produces roan-colored coat.What is the probability of having a roan-coated offspring in a cross between a white-coated cattle anda roan-coated cattle?arrow_forward
- A mapping experiment in strawberries shows that the genes for color and plant height are separated by 16cM. In a cross between a heterozygous plant (CcHh) and a homozygous recessive plant, what percent of offspring would inherit a chromosome carrying cH from the heterozygous parent.... 1. if the heterozygous parent’s alleles are in repulsion? _________________ 2. if the heterozygous parent’s alleles are in coupling? _________________arrow_forwardPigment in the mouse is produced only when the C allele is present.Individuals of the cc genotype have no color. If color is present,it may be determined by the A and a alleles. AA or Aa resultsin agouti color, whereas aa results in black coats.(a) What F1 and F2 genotypic and phenotypic ratios areobtained from a cross between AACC and aacc mice?(b) In the three crosses shown here between agouti femaleswhose genotypes were unknown and males of the aaccgenotype, what are the genotypes of the female parents foreach of the following phenotypic ratios? (1) 8 agouti (2) 9 agouti (3) 4 agouti8 colorless 10 black 5 black 10 colorlessarrow_forwardSharks with a floppy dorsal fin are heterozygous at the locus that controls this trail. When two sharks with floppy fins are crossed, 2/3 of the offspring have a floppy fin, and 1/3 of the offspring have a stiff fin. What is the most likely explanation for these observations? Select one: OThe allele that causes the floppy fin phenotype is a recessive lethal allele O The allele that causes the floppy fin phenotype is codominant to the allele causing stiff fin. O The allele that causes the floppy fin phenotype is a dominant lethal allele O The allele that causes the floppy fin phenotype is incompletely dominant to the allele causing stiff fin. O The allele that causes the floppy fin phenotype is an imprinted allelearrow_forward
- In certain breeds of chicken, the appearance of the comb (a fleshy growth or crest on the top of the head of gallinaceous birds, such as turkeys, pheasants, and domestic chickens) is controlled by a single pair of genes. One type of comb, the pea comb, is dominant over a single comb. You own a rooster with a single comb. M a. What is the genotype of your rooster? b. Suppose you cross your rooster is crossed your neighbor's pea- combed hen. The brood of 13 eggs that is produced hatches to Single reveal 5 have single combs and 7 have pea combs. What was the genotype of your neighbor's hem? (Use a Punnett square to determine your results). Peaarrow_forwardIn bears fur colour can be either yellow or tan, and is determined by two alleles of the C gene. A heterozygous bear is observed to present a fur pattern of yellow and tan patches. Explain why this can occur.arrow_forwardIn cats, the gene for calico (multicolored) cats is both sex-linked and codominant. Due to a phenomenon known as dosage compensation, females that receive a B and an R gene have black and orange splotches on white Males can only be black or orange, but never calico. a. What would a calico cat’s genotype be? b. Show the cross of a female calico cat with a black male. What percentage of the kittens will be black and male? c. What percentage of the kittens will be calico and male? d. What percentage of the kittens will be calico and female? e. Show the cross of a female black cat with a male orange cat. f. What percentage of the kittens will be calico and female? What color will all the male cats be?arrow_forward
- The production of eye-color pigment in Drosophila requires the dominant allele A. The dominant allele P of asecond independent gene turns the pigment to purple,but its recessive allele leaves it red. A fly producing nopigment has white eyes. Two pure lines were crossedwith the following results:P red-eyed female white-eyed maleF1 purple-eyed femalesred-eyed malesF1 F1purple eyed 38red eyed 38white eyed 28F both males and females: 2Explain this mode of inheritance, and show the genotypesof the parents, the F1, and the F2.arrow_forwardraccoons may have wide, medium-sized, or narrow bands around their tails. They may also havethe habit of washing all, or some of their food, or do not wash their food at all. a) assign genotypes to the phenotypes mentioned (see attached table) b. What mode of inheritance would most likely be exhibited by these traits if crosses were made? c. If two raccoons with medium-sized tail bands and have the habit of washing some of theirfoods will be crossed, what is the probability of having F1 raccoons with: c.1 wide tail bands that won’t wash any of their food? c.2 the same genotype as the parent raccoons? d. If a raccoon with a wide tail band that washes only some of its food is crossed with a raccoonwith a narrow tail band that doesn’t wash any food, what percentage of their offspring wouldbe medium-tailed and washes all its food? Show COMPLETE cross.arrow_forwardIn goats, development of the beard is due to a recessive gene. The following cross involving true-breeding goats was made and car- ried to the F2 generation: P;: bearded female x beardless male F1: all bearded males and beardless females ´1/8 beardless males | 3/8 bearded males 3/8 beardless females 1/8 bearded females F; × F, Offer an explanation for the inheritance and expression of this trait, diagramming the cross. Propose one or more crosses to test your hypothesis.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Biology: The Dynamic Science (MindTap Course List)BiologyISBN:9781305389892Author:Peter J. Russell, Paul E. Hertz, Beverly McMillanPublisher:Cengage Learning
Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College
Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage Learning
Biology: The Dynamic Science (MindTap Course List)
Biology
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Cengage Learning
Concepts of Biology
Biology
ISBN:9781938168116
Author:Samantha Fowler, Rebecca Roush, James Wise
Publisher:OpenStax College
Biology (MindTap Course List)
Biology
ISBN:9781337392938
Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher:Cengage Learning
How to solve genetics probability problems; Author: Shomu's Biology;https://www.youtube.com/watch?v=R0yjfb1ooUs;License: Standard YouTube License, CC-BY
Beyond Mendelian Genetics: Complex Patterns of Inheritance; Author: Professor Dave Explains;https://www.youtube.com/watch?v=-EmvmBuK-B8;License: Standard YouTube License, CC-BY