Question 1. Consider 3 gene loci in the pea plant. Locus 1 affects seed color; allele...
Question 1. Consider 3 gene loci in the pea plant. Locus 1 affects seed color; allele G for green, g for yellow. Locus 2 affects seed shape; allele R for round, r for wrinkled. Locus 3 affects flower color; allele B for red, b for white. Each uppercase allele is completely dominant to their corresponding lowercase, recessive allele. Each locus is on a different non-homologous chromosome; so, the loci segregate or sort independently from each other during meiosis. Two parent pea plants, each of genotype GgRrBb, are mated with each other. That mating produced 1000 progeny.
A) What fraction of the gametes of the parents are expected to contain only recessive alleles? Type your answer as a fraction in simplest form (e.g.,1/2)
B) How many phenotypic classes are expected among the progeny? Type your answer as an integer (e.g.,6)
C) What fraction of the progeny are expected to have the combination green seed, round seed, and red flowers? Type your answer as a fraction in simplest form (e.g.,1/2)
D) How many progeny are expected to have a combination of yellow seed, wrinkled seed, and white flowers? Give your answer rounded to the nearest whole number (e.g.,6)
E) How many genotypic classes are expected among the progeny? Type your answer as an integer (e.g.,6)
Homework Answers
Answer:
A). 1/8
Explanation:
GgRrBb produce 8 types of gametes with equal probability, i.e., 1/8.
GRB=1/8
GRb = 1/8
GrB = 1/8
Grb = 1/8
gRB=1/8
gRb = 1/8
grB = 1/8
grb = 1/8
B). 8 types of phenotypes will be produced.
Explanation:
Number phenotypes = 2^n = 2^3 = 8
n = Number of genes
C).
The fraction of the progeny are expected to have the combination green seed, round seed, and red flowers = G_R_B_ = ¾ * ¾ * ¾ = 27/64
Explanation:
GgRrBb x GgRrBb ---Parents
Gg X Gg = GG (1/4), Gg (1/2) & gg (1/4)
Rr x Rr = RR (1/4), Rr (1/2) & rr (1/4)
Bb x Bb = BB (1/4), Bb (1/2) & bb (1/4)
Number of progeny are expected to have a combination of yellow seed, wrinkled seed, and white flowers = gg rr bb = ¼ * ¼ * ¼ * 1000 = 16
E). 27
Genotypic ratio: 1:2:2:2:4:8:4:4:2:2:1:4:1:2:4:2:1:2:1:4:2:2:1:2:1:2:1.
Add Answer to:
Question 1. Consider 3 gene loci in the pea
plant. Locus 1 affects seed color; allele...
You are interested in the inheritance of seed color (the Y-locus) and seed shape (the S-locus)...
You are interested in the inheritance of seed color (the Y-locus) and seed shape (the S-locus) in corn plants. At the seed color locus, the Y allele (yellow seeds) is dominant to the y-allele (white seeds). At the seed shape locus, the S allele (smooth seeds) is dominant to the s allele (rough seeds). You perform the following dihybrid cross between two corn plants, one of which has a yellow and smooth seeds (genotype: YySs), the other of which has...
Table 1: Mendel's Traits and Symbols for Pea Plants Traits Symbol Symbol Dominant Allele Round Yellow...
Table 1: Mendel's Traits and Symbols for Pea Plants Traits Symbol Symbol Dominant Allele Round Yellow Smooth Green Tall Axial Seed Shape Seed Color Pod Shape Pod Color Plant Height Flower Position S Recessive Allele Wrinkled Green Constricted Yellow Short Terminal а Refer back to Table 1 on the first pa abie 1 on the first page of this assignment to answer the following two questions. Use the appropriate symbols and phenotypes in your answer, 1. Show the genotypes of...
Deducting phenotypes and genotypes of selfed parents Mendel studied pea plants dihybrid for seed shape (round...
Deducting phenotypes and genotypes of selfed parents Mendel studied pea plants dihybrid for seed shape (round versus wrinkled) and seed color (yellow versus green). Recall that the round allele (R) is dominant to the wrinkled allele (r) and the yellow allele (Y) is dominant to the green allele (y). The table below shows the F1 progeny that result from selfing four different parent pea plants. Use the phenotypes of the F1 progeny to deduce the genotype and phenotype of each...
There is a two locus, two allele system where the ‘E’ locus codes for flower color...
There is a two locus, two allele system where the ‘E’ locus codes for flower color and (EE) gives red flowers and (ee) gives white flowers and (E) is dominant. The second locus controls seed color and has two alleles, (YY) gives yellow seeds and (yy) gives green seeds and (Y) is dominant. Assuming these loci are on different chromosomes (that is, they are unlinked) what will be the genotype frequencies of the offspring be in a cross between EE...
In this tutorial you will examine dihybrid crosses: crosses where alleles at separate loci assort independently...
In this tutorial you will examine dihybrid crosses: crosses
where alleles at separate loci assort independently into gametes at
meiosis. You will also use logic to determine unknown genotypes,
phenotypes, and genetic ratios from given data.
Part A - Deducing phenotypes and genotypes of selfed parents
Mendel studied pea plants dihybrid for seed shape (round versus
wrinkled) and seed color (yellow versus green). Recall that
the round allele (R) is dominant to the wrinkled allele
(r) and
the yellow allele...
Name: PRELAB QUESTIONS 1. Define the following terms: Gene- Allele - Phenotype- Genotype- Homozygous dominant -...
Name: PRELAB QUESTIONS 1. Define the following terms: Gene- Allele - Phenotype- Genotype- Homozygous dominant - Homozygous recessive- Heterozygous- 2. Put into your own words Mendel's law of segregation. LI Does the law of segregation always apply when dealing with genes located on chromosomes within a diploid nucleus? If not, explain why. 3. Mendel worked with several pea plant characters, each of which was determined by a single gene with two alleles, one dominant and the other recessive. For each...
1. In one experiment, Mendel crossed a pea plant that bred true for axial flowers with...
1. In one experiment, Mendel crossed a pea plant that bred true for axial flowers with a pea plant that bred true for terminal flowers. All the F1 plants had axial flowers. Which is the recessive trait? Explain your answer. 2. Green pod color is a dominant allele in pea plants (G). If two plants with green pods are crossed, some of the offspring have yellow pods. What are the possible genotypes of the parents? 3. In garden peas, one...
Question 1 (10 pts). Ilne genetic linkage among 3 gene loci in norses is being stuaiea....
Question 1 (10 pts). Ilne genetic linkage among 3 gene loci in norses is being stuaiea. ine loci are part of autosomal chromosomes and they MIGHT be on the same pair of homologous chromosomes. There are two alleles at each locus. At the coat color locus, allele B is for black, and b is for white. At the height locus, allele H is for tall, and h is for short. At the tail locus, allele T is for long, and...
_Date trait as 1 ol for the Name Genetics Practice Problems #2 - Writing Alleles Period...
_Date trait as 1 ol for the Name Genetics Practice Problems #2 - Writing Alleles Period Directions: Using the data in Table 1. write the enotype that correspond phenotype descriptions "e the genotype that corresponds to the em heig Symbol Round Table 1: Mendel's Traits and Symbols for Pea Plants Traits Dominant Allele Seed Shape I Symbol Recessive Allele Seed Color R Wrinkled Green Seed Coat Color White Pod Shape Constricted Pod Color Green Yellow Stem Height Tall Short Flower...
Two independently assorting genes help determine fruit color in squash. At the first locus, the W...
Two independently assorting genes help determine fruit color in squash. At the first locus, the W allele codes for a dominant white phenotype, whereas the w allele allows colored squash. At the second locus, the allele Y codes for a dominant yellow phenotype, and the allele y codes for a recessive green phenotype. The interaction between these two genes is an example of dominant epistasis, with the W locus acting as the epistatic locus and the Y locus acting as...
Table 1: Mendel's Traits and Symbols for Pea Plants Traits Symbol Symbol Dominant Allele Round Yellow Smooth Green Tall Axial Seed Shape Seed Color Pod Shape Pod Color Plant Height Flower Position S Recessive Allele Wrinkled Green Constricted Yellow Short Terminal а Refer back to Table 1 on the first pa abie 1 on the first page of this assignment to answer the following two questions. Use the appropriate symbols and phenotypes in your answer, 1. Show the genotypes of...
Deducting phenotypes and genotypes of selfed parents Mendel studied pea plants dihybrid for seed shape (round versus wrinkled) and seed color (yellow versus green). Recall that the round allele (R) is dominant to the wrinkled allele (r) and the yellow allele (Y) is dominant to the green allele (y). The table below shows the F1 progeny that result from selfing four different parent pea plants. Use the phenotypes of the F1 progeny to deduce the genotype and phenotype of each...
In this tutorial you will examine dihybrid crosses: crosses
where alleles at separate loci assort independently into gametes at
meiosis. You will also use logic to determine unknown genotypes,
phenotypes, and genetic ratios from given data.
Part A - Deducing phenotypes and genotypes of selfed parents
Mendel studied pea plants dihybrid for seed shape (round versus
wrinkled) and seed color (yellow versus green). Recall that
the round allele (R) is dominant to the wrinkled allele
(r) and
the yellow allele...
Name: PRELAB QUESTIONS 1. Define the following terms: Gene- Allele - Phenotype- Genotype- Homozygous dominant - Homozygous recessive- Heterozygous- 2. Put into your own words Mendel's law of segregation. LI Does the law of segregation always apply when dealing with genes located on chromosomes within a diploid nucleus? If not, explain why. 3. Mendel worked with several pea plant characters, each of which was determined by a single gene with two alleles, one dominant and the other recessive. For each...
Question 1 (10 pts). Ilne genetic linkage among 3 gene loci in norses is being stuaiea. ine loci are part of autosomal chromosomes and they MIGHT be on the same pair of homologous chromosomes. There are two alleles at each locus. At the coat color locus, allele B is for black, and b is for white. At the height locus, allele H is for tall, and h is for short. At the tail locus, allele T is for long, and...
_Date trait as 1 ol for the Name Genetics Practice Problems #2 - Writing Alleles Period Directions: Using the data in Table 1. write the enotype that correspond phenotype descriptions "e the genotype that corresponds to the em heig Symbol Round Table 1: Mendel's Traits and Symbols for Pea Plants Traits Dominant Allele Seed Shape I Symbol Recessive Allele Seed Color R Wrinkled Green Seed Coat Color White Pod Shape Constricted Pod Color Green Yellow Stem Height Tall Short Flower...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 10 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 10 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 10 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 10 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 10 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 10 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 10 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 10 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 10 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 10 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 10 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 10 months ago