Biological Science, Books a la Carte Plus Mastering Biology with Pearson eText -- Access Card Package (6th Edition)
6th Edition
ISBN: 9780134296029
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Greg Podgorski, Emily Taylor, Jeff Carmichael
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Question
Chapter 14, Problem 12TYPSS
Summary Introduction
To review:
Based on the observation in a study, predict the genotypes of the green plants and color encoded by each of these genotypes. Further, determine the fraction of the total progeny exhibiting each type of color.
Introduction:
A gene could be autosomal or sex-lined in nature. An autosomal gene is the one that is present on the numbered chromosome other than sex chromosomes. Sex-linked genes are those that are present on X and Y chromosome.
The two autosomal genes that are located on different chromosomes control the production of feather pigment in parakeets. Gene B codes for an enzyme that is required for the synthesis of a blue pigment, and gene Y codes for an enzyme required for the synthesis of a yellow pigment. Green results from a mixture of yellow and blue pigments, and recessive mutations that prevent production of either pigment are known for both genes. Suppose that a breeder has two green parakeets and mates them. The offspring are green, blue, yellow, and albino (unpigmented).
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Gene S controls the sharpness of spines in a type of cactus. Cactuses with the dominant allele have sharp spines, whereas homozygous recessive cactuses have dull spines. At the same time, a second gene, N, determines whether or not cactuses have long or short spines. Homozygous recessive cactuses have short spines. A cross between a homozygous sharp-long cactus and a dull short-spined cactus would produce what percentage of sharp-long cacti?
Gene S controls the sharpness of spines in a type of cactus. Cactuses with the dominant allele have sharp spines, whereas homozygous recessive cactuses have dull spines. At the same time, a second gene, N, determines whether or not cactuses have long or short spines. Homozygous recessive cactuses have short spines. A cross between a homozygous sharp-long cactus and a dull short-spined cactus would produce what percentage of sharp-long cacti? Show your Punnett square please.
Holstein cattle suffer from the condition citrullinemia, in which homozygous recessive calves die within a week of birth because they cannot break down ammonia that is produced when amino acids are metabolized. If a cow that is heterozygous for the citrullinemia gene is inseminated by a bull that is homozygous dominant, what is the probability that a calf inherits citrullinemia?
Chapter 14 Solutions
Biological Science, Books a la Carte Plus Mastering Biology with Pearson eText -- Access Card Package (6th Edition)
Ch. 14 - 1. The genes for the trails that Mendel worked...Ch. 14 - 2. CAUTION Why is the pea wrinkled-seed allele a...Ch. 14 - Prob. 3TYKCh. 14 - 4. Mendel’s rules do not correctly predict...Ch. 14 - Prob. 5TYKCh. 14 - Prob. 6TYKCh. 14 - Example Problem Two black female mice are crossed...Ch. 14 - Prob. 8TYKCh. 14 - Prob. 9TYPSSCh. 14 - Prob. 10TYPSS
Ch. 14 - 11. In garden peas, yellow seeds (Y) are dominant...Ch. 14 - Prob. 12TYPSSCh. 14 - The smooth feathers on the back of the neck in...Ch. 14 - SOCIETY As a genetic counselor, you advise couples...Ch. 14 - 15. Suppose you are heterozygous for two genes...Ch. 14 - Suppose a woman with blood type O married a man...Ch. 14 - Prob. 17TYPSSCh. 14 - Society Two mothers give birth to sons at the same...Ch. 14 - Prob. 19TYPSSCh. 14 - QUANTITATIVE Recall that hemophilia is an X-linked...Ch. 14 - Prob. 21PIATCh. 14 - Given the pedigree, what is the most likely mode...Ch. 14 - Prob. 23PIATCh. 14 - QUANTITATIVE If the son with ALD in the third...Ch. 14 - Prob. 25PIATCh. 14 - Prob. 26PIAT
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
- In otters fur colour can be either yellow or brown, and is determined by two alleles of the C gene. A heterozygous otter is observed to present a fur pattern of yellow and bear patches. Explain why this can occur.arrow_forwardIn birds there are two genes that both influence feather phenotype. The first is a sex-linked gene for feather colour with two alleles– a dominant allele for white feathers and a recessive allele for grey feathers. The second is an autosomal gene for feather shape with two alleles– a dominant allele for curly feathers and a recessive allele for straight feathers.A cross between a male with grey, straight feathers and a female with white, curly feathers are expected to produce the following offspring:1 curly white male : 1 curly grey female : 1 straight white male : 1 straight grey femaleBased on this cross, answer the following questions:i) Please provide appropriate symbols for the two alleles for feather colour. ii) Please provide appropriate symbols for the two alleles for feather shape. iii) What is the probability of having a chick with curly feathers? iv) What is the probability of a female chick having grey feathers? v) What is the probability that this pair will have five…arrow_forwardSuppose that a geneticist discovers a new mutation in Drosophila melanogaster that causes the flies to shake and quiver. She calls this mutation quiver, qu, and determines that it is due to an autosomal recessive gene. She wants to determine whether the gene encoding quiver is linked to the recessive gene for vestigial wings, vg. She crosses a fly homozygous for quiver and vestigial traits with a fly homozygous for the wild-type traits, and then uses the resulting F1 females in a testcross. She obtains the flies from this testcross. Phenotype Number of flies vg+ qu+ 230 vg qu 224 vg qu+ 97 vg* qu 99 Test the hypothesis that the genes quiver and vestigial assort independently by calculating the chi-squared, X², for this hypothesis. Provide the X2 to one decimal place. X2 Does the X2 value support the hypothesis that the quiver and vestigial genes assort independently? Why the partial table of critical values for X2 calculations to test this hypothesis. or why not? Use O No, the X' value…arrow_forward
- You have a true-breeding strain of miniature-winged fruit flies, where this wing trait is recessive to the normal long wings. How would you show whether the miniature wing trait is sex-linked or autosomal?arrow_forwardPigments in some bears are the result of epistasis between 2 genes. The black coat color is only produced when both wildtype forms of genes D and E are present. When gene D (D-ee) is wildtype alone, offspring are white. When gene E (ddE-) is wildtype alone, offspring are brown. When no wildtype alleles are present (ddee) offspring are all white. Based on this describe the relationship between the genes D and E. Group of answer choices A-D is dominant to E B- E is dominant to D C- D is epistatic to E D- E is epistatic to Darrow_forwardAlbinism in animals is caused by recessive mutations inone of several autosomal genes required for synthesis ofmelanin, a chemical precursor for many skin and eye pigments. Albino animals are often confused with so-calledleucistic animals that are white due to recessive mutationsin a gene required in a different pathway, for example apathway for development of the cells that produce all skinpigments. Suppose you have two white hummingbirds—a male and female—and they have mated. Assuming thatall relevant mutations are rare, autosomal, and recessiveto wild-type alleles, what would you expect their progenyto look like under the following conditions:a. They are both albinos.b. They are both leucistic.c. One is albino and the other is leucistic.arrow_forward
- In birds there are two genes that both influence feather phenotype. The first is an autosomal gene for feather shape with two alleles – a dominant allele for curly feathers and a recessive allele for straight feathers. The second is a sex-linked gene for feather colour with two alleles – a dominant allele for grey feathers and a recessive allele for white feathers. A cross between a male with straight, white feathers and a female with curly, grey feathers are expected to produce the following offspring:1 curly grey male : 1 curly white female : 1 straight grey male : 1 straight white female Based on this cross, answer the following questions:i) Please provide appropriate symbols for the two alleles for feather shape. ii) Please provide appropriate symbols for the two alleles for feather colour. iii) What is the probability that a chick born to these parents will have grey feathers? iv) What is the probability of a male chick having grey feathers? v) What is the probability that this…arrow_forwardA breeder is interested in a new coat colour in mice. This trait is controlled by a single autosomal gene (Gene T) with two alleles. The T-allele results in a yellow coat colour, while the recessive allele causes a cream coat colour. The breeder has a yellow mouse. Can you suggest how the breeder can determine the genotype (TT or Tt) of his mouse in a single cross? Describe this cross and provide details on how you would interpret the results.arrow_forwardIn chickens, a condition referred to as “creeper” exists whereby the bird has very short legs and wings, and appears to be creeping when it walks. If creepers are bred to normal chickens, one-half of the offspring are normal and one-half are creepers. Creepers never breed true. If bred together, they yield two thirds creepers and one-third normal. Propose an explanation for the inheritance of this condition.arrow_forward
- In birds there are two genes that both influence beak phenotype. The first is an autosomal gene for beak colour with two alleles – a dominant allele for a black beak and a recessive allele for a grey beak. The second gene for beak shape is a sex-linked gene with two alleles – a dominant allele for sharp beaks and a recessive allele for rounded beaks. A cross between a male with a black, rounded beak and a female with a black, sharp beak are expected to produce the following offspring:3 males with black, sharp beaks : 3 females with black, rounded beaks : 1 male with a grey, sharp beak : 1 female with a grey, round beak Based on this cross, answer the following questions:i) Please provide appropriate symbols for the two alleles for beak colour. ii) Please provide appropriate symbols for the two alleles for beak shape.iii) What is the probability that a chick born to these parents will have a rounded beak? iv) What is the probability of a male chick having a sharp beak? v) What is the…arrow_forwarda) You are studying cushion plants in New Zealand: the wild-type cushion plan has a wide canopy. You obtain eight cushion plants that all have narrow canopies caused by a single autosomal recessive mutation. To determine how many genes are defined by these mutations, you mate the plants together and get the results shown in the complementation table below. The “–“ represents plants with narrow canopies and the “+” represents wide canopies. What will the offspring of a cross between plants A and F look like? b) Based on the above, how many different genes are defined by the 8 mutant strains?arrow_forwardWild type fruit flies have grey bodies and straight wings. Yellow bodies and curly wings are both recessive phenotypes. The body color gene is X-linked; the wild type allele is designated XY+. The wing shape gene is autosomal; the wild type allele is designated C+. You cross a pure breeding yellow-bodied, curly-winged female with a grey-bodied, straight-winged male to produce an F1 generation. Use this information to answer questions X-Y below. 20) You cross two F1 flies to produce an F2 generation. What proportion of the F2 female flies are expected to have curly wings and yellow bodies? a) 1/16 b) 1/4 c) 1/8 d) 3/8 e) 3/16arrow_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
Biology: The Dynamic Science (MindTap Course List)
Biology
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Cengage Learning
Mitochondrial mutations; Author: Useful Genetics;https://www.youtube.com/watch?v=GvgXe-3RJeU;License: CC-BY