Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 44.5, Problem 2CS
Summary Introduction
To draw: A Punnett square and a pedigree to predict the ratios of genotypes and
Introduction: The defective ability by which a person cannot see a color or cannot tell differences in color is termed as color blindness. There are several types of color blindness such as red-green color blindness, blue-yellow color blindness and so on.
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Q1: Assuming these two genes sort independently, how many progeny would you expect to show the green striped phenotype? (Enter your answers as a whole number, e.g. 1)
Q2:
Which of the following are recombinant phenotypes? (Select all that apply)
A. Green and Spotted
B. Green and Striped
C. Yellow and Spotted:
D. Yellow and Striped
Subject: Genetic problems
6. how would you recognize a line of garden peas that had become genotypically pure for a given trait?
7. A cross of two pink-flowered plants produces offspring whose flowers are red, pink, or white. Defining your genetic symbols, give all the different kinds of genotypes involved, and the phenotypes they represent.
9. In snapdragons, red flowers (R) are incompletely dominant to white (r), the hybrid being pink; narrow leaves (N) are incompletely dominant to broad leaves (n), the hybrid being intermediate in width ("medium"). show the genotypes and phenotypes for the progeny of a cross between
a. red medium and pink medium plant
b. a pink medium and white narrow
c. two identical dihybrids
12. In guinea pigs, short is dominant to long. A short-haired guinea pig was mated to a long-haired one. What proportions of the offspring (F1) will be expected to be:
a. homozygous short-haired
b. homozygous long -haired
c. heterozygous short-haired
d. heterozygous…
Activity 9GENES SEGREGATION BY BEAN-O TYPE Materials:
Colored beans to represent the gene for a certain trait of garden pea. (60 pieces of the same size and shape; 30 pieces of which are of different colors from rest)
Procedures:
1. Place the 30 pieces beans (one color) to one container and the other 30 pieces to the other container. Assign which color of beans will represent dominant and recessive genes of a specific trait of garden pea
2. Label the paper container as First Parent P1, male and other P1 female
3. At random, segregate the beans on the Lab table. Assume fertilization occurs and First filial generations (F1) are formed
4. Categorize the formed First filial generations
5. Put all the beans in one container. Assume that all the first filial generations undergo self-fertilization
6. Pick up the beans by two from the container without looking at it and collect the second Filial generation (F2)
7. Categorize the formed Second filial generations into two (2) phenotype, and…
Chapter 44 Solutions
Biology
Ch. 44.1 - Prob. 1CSCh. 44.2 - Prob. 1CCCh. 44.2 - Prob. 1CSCh. 44.2 - Prob. 2CCCh. 44.2 - Prob. 2CSCh. 44.2 - Prob. 3CCCh. 44.4 - Prob. 1CCCh. 44.5 - Prob. 1CSCh. 44.5 - Why is red-green color blindness rare in females?Ch. 44.5 - Prob. 2CS
Ch. 44.5 - Prob. 2CCCh. 44.6 - Prob. 1EQCh. 44.6 - CoreSKILL Of the two hypotheses explaining how...Ch. 44.6 - Prob. 3EQCh. 44.6 - Prob. 1CCCh. 44 - The process in which incoming sensory stimulation...Ch. 44 - Prob. 2TYCh. 44 - ______blanksense pain; ______blank sense heat or...Ch. 44 - Prob. 4TYCh. 44 - In which process(es) are hair cells involved? a....Ch. 44 - Prob. 6TYCh. 44 - In the mammalian eye, light from near or far...Ch. 44 - Prob. 8TYCh. 44 - Prob. 9TYCh. 44 - The stimulation for olfaction involves odorant...Ch. 44 - Prob. 1CQCh. 44 - Prob. 2CQCh. 44 - Prob. 3CQCh. 44 - Discuss the several types of sensory stimuli that...Ch. 44 - Prob. 2COQ
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- Q. 3: In rats, the following genotypes of two independently assorting autosomal genes determine coat color A–B– (gray A–bb (yellow aaB– (black aabb (cream A third gene pair on a separate autosome determines whether or not any color will be produced The CC and Cc genotypes allow color according to the expression of the A and B alleles However, the cc genotype results in albino rats regardless of the A and B alleles present Determine the F1 phenotypic ratio of the following crosses (a) AAbbCC × aaBBc (b) AaBBCC × AABbc (c) AaBbCc × AaBbc (d) AaBBCc × AaBBC (e) AABbCc × AABbc Q. 4: Given the inheritance pattern of coat color in rats described in Q 3, predict the genotyp and phenotype of the parents who produced the following offspring (a) 9/16 gray: 3/16 yellow: 3/16 black: 1/16 crea (b) 9/16 gray: 3/16 yellow: 4/16 albin (c) 27/64 gray: 16/64 albino: 9/64 yellow: 9/64 black: 3/64 cream (d) 3/8 black: 3/8 cream: 2/8 albino (e) 3/8 black: 4/8 albino: 1/8 creamarrow_forwardTRAIT: BENT FINGER 1. What are the roles of the DNA, genes and proteins in a given trait?2. How would you relate the individual trait or characteristics to proteins,genes and DNA?3. Would the manifestation of a trait be affected once the DNA nor the genesare altered?arrow_forwardACTIVITY 3: Incomplete dominance vs. codominance Coat color in dragons is controlled by 2 alleles. A black dragon is crossed with a white dragon and all of the offspring are gray. Are the alleles incompletely dominant or codominant? ___ Explain (how do you know)? What would offspring of the other type probably look like? __arrow_forward
- Q. 3: In rats, the following genotypes of two independently assorting autosomal genes determine cont color: A-B- (gray) A-bb (yellow) aab (black) aabb (cream) A third gene pair on a separate autosome determines whether or not any color will be produced. The CC and Ce genotypes allow color according to the expression of the A and B alleles. However, the ce genotype results in albino rats regardless of the A and B alleles present. Determine the Fl phenotypic ratio of the following crosses: (a) AAbbCC x aaBBcc (b) AaBBCC x AABbce (c) AaBbCc x AaBbcc (d) AaBBCe x AaBBCe (e) AABbCe x AABbeearrow_forwardI. OBJECTIVES At the end of the activity, the students are able to: A observe the separation and independent assortment of alleles: B. demonstrate the inheritance of dominant and recessive traits, codominance. and incomplete dominance: and C. construct a model of a dragon based on the characteristics inherited from the parent dragons. II. MATERIALS Writing materials 2 Five-peso coins 2 One-peso coins 2 Twenty-peso coins Ill. PROCEDURE I. In this activity. you and a partner will work together to produce o baby dragon from the random mixing of genetic traits. Each student will be a surrogate dragon parent. Surrogate dragon parent partners must be of the opposite sex. therefore the female has X/X chromosomes white the male has X/Y chromosomes. You can ask your parent. sibling. or relative to work with you Or you Can work with your Classmate. 2. Each partner must have three different coins -- one of each color of autosome (green and yellow autosomes). and one sex chromosome coin_ You can…arrow_forwardQ. 4: Given the inheritance pattern of coat color in rats described in Q 3, predict the genotype and phenotype of the parents who produced the following offspring: (a) 9/16 gray: 3/16 yellow: 3/16 black: 1/16 cream (b) 9/16 gray: 3/16 yellow: 4/16 albino (c) 27/64 gray: 16/64 albino: 9/64 yellow: 9/64 black: 3/64 cream (d) 3/8 black: 3/8 cream: 2/8 albino (e) 3/8 black: 4/8 albino: 1/8 creamarrow_forward
- Problem: A homozygous tall, homozygous white flower plant crosses with a homozygous short, homozygous purple flower plant. We know that the purple and tall flowers are the dominant traits. Show your work. 1. What are the genotypes of the offspring? Why? 2. What are the genotypes of the offspring? Why?arrow_forwardI. Perform the indicated single-gene and two-gene crosses. Show all work. Show all Punnett squares. List the gene or genes involved, list and define all allele symbols, and indicate the genotypes of the individuals you are crossing above the Punnett square. Answer questions that ask for a ratio as a ratio and questions that ask for a percent as a percent. In humans, albinism is a recessively determined trait. One form of hereditary deafness is also a recessive trait. Show the cross of a man who is heterozygous for skin pigmentation and heterozygous for hereditary deafness with a woman who is albino and deaf. Show the expected phenotype ratio of the offspring.arrow_forwardQ. 1: In rats, the following genotypes of two independently assorting autosomal genes determine coat color:A–B– (gray)A–bb (yellow)aaB– (black)aabb (cream)A third gene pair on a separate autosome determines whether or not any color will be produced. The CC and Cc genotypes allow color according to the expression of the A and B alleles.However, the cc genotype results in albino rats regardless of the A and B alleles present.Determine the F1 phenotypic ratio of the following crosses:(a) AAbbCC × aaBBcc(b) AaBBCC × AABbcc(c) AaBbCc × AaBbcc(d) AaBBCc × AaBBCc(e) AABbCc × AABbcc The above sub-part of question is already solved Q. 2: Given the inheritance pattern of coat color in rats described in Q 3, predict the genotypeand phenotype of the parents who produced the following offspring:(a) 9/16 gray: 3/16 yellow: 3/16 black: 1/16 cream(b) 9/16 gray: 3/16 yellow: 4/16 albino(c) 27/64 gray: 16/64 albino: 9/64 yellow: 9/64 black: 3/64 cream(d) 3/8 black: 3/8 cream: 2/8 albino(e) 3/8 black:…arrow_forward
- Q1 The heritability of a trait can vary between -1 and +1. True or false? Q2 Heritability is estimated based on the slope of a X-Y scatter plot between progeny's values (Y axis) and mid-parental values (X axis). True or false?arrow_forwardGene mapping using the Three-point Testcross a) Given the following alleles that control seed traits:W = wrinkled G = green R = roundw = smooth g = yellow r = oval b) Results of a cross with a triple heterozygote revealed the following phenotypes:30 smooth yellow round4 smooth green round958 wrinkled green round2 wrinkled yellow oval18 wrinkled yellow round946 smooth yellow oval16 smooth green oval26 wrinkled green oval c) Determine the order of the genes and the distance between them in centiMorgan (cM).Construct a gene map to show your results. TIP: Based on the phenotypes, determine the alleles in the gametesarrow_forwardQ1. How many genes are there in contig1? Q2. what are the names of these genes? Q3. Which gene ha the largest span (i.e, the largest distance between the start and the end of the gene)?arrow_forward
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