Homework Answers
Answer : Parentals are AB and ab and you expect 40% of each, recombination are Ab and aB with 10% each.
Add Answer to:
Genes A and B are linked, with 20 percent recombination. What would be the phenotypes, and...
Question 2 Genes a and b are linked, with 20% recombination frequency. Two pure breeding strains...
Question 2 Genes a and b are linked, with 20% recombination frequency. Two pure breeding strains (the parental cross) were crossed. The F1 was then testcrossed. a+b-/a-b+ x a-b-/a-b- What were the parental strains genotypes? b. What would be the genotypes and the probability of each, among progeny of the testcross? Example: a+b+/a-b- 45% c. Is this an example of cis- or trans-linkage?
36. The recessive autosomal maize genes sh and bz are linked and 40 map units apart,...
36. The recessive autosomal maize genes sh and bz are linked and 40 map units apart, If a plant with the genotype sh bz/ sh bz is selfed, what percentage of the progeny will be double recessive? 37. If the recombination frequency between the linked autosomal genes A and B in Drosophila is 15 percent, what phenotypic frequencies would you expect from a cross AB/ab females x AB/ab males? (There is no crossing over in Drosophila males). 38. In the...
Genes ‘‘a’’ and ‘’b’’ are linked with a recombination frequency of 10%. “A” is completely dominan...
Genes ‘‘a’’ and ‘’b’’ are linked with a recombination frequency of 10%. “A” is completely dominant over ‘’a’’ and ‘’B’’ is completely dominant of ‘’b’’. Assuming you start with the following parental genotypes AAbb and aaBB in a dihybrid cross Indicate the percentage of F2 progeny following an F1 self-cross that have: only parental types, both parental and recombinant types and only recombinant types. a. 90%, 10% 0% b. 45%, 45%, 10% c. 85%, 10%, 5% d. 81%, 18%, 1%...
Mapping genes with recombination frequencies in Drosophila 1. Suppose you know of three linked loci on...
Mapping genes with recombination frequencies in Drosophila 1. Suppose you know of three linked loci on the Drosophila X chromosome (a, b, and c). Assume that you are starting out with true-breeding stocks that show all three recessive traits and true-breeding stocks that show all three dominant traits. A. If you wanted to do a 3-point test cross to map the three loci, how would you set up the cross? What genotypes do you use for males and females in...
Mapping genes with recombination frequencies in Drosopna 1. Suppose you know of three linked loci on...
Mapping genes with recombination frequencies in Drosopna 1. Suppose you know of three linked loci on the Drosophila X chromosome (a, b, and c). Assume that you are starting out with true-breeding stocks that show all three recessive traits and true-breeding stocks that show all three dominant traits. A. If you wanted to do a 3-point test cross to map the three loci, how would you set up the cross? What genotypes do you use for males and females in...
genes A and B are 20 map units apart. If you cross Ab/aB xab/ab, how many...
genes A and B are 20 map units apart. If you cross Ab/aB xab/ab, how many each progeny type would you expect if total progeny was 1000. a. AaBb(AB/ab) b. Aabb ( Ab/ab) c. aaBb(aB/ab) d. aabb(ab/ab) is b and c the parental ? would that mean that b and c are 20 ? Thanks
Genes A and B are linked. Individual plants homozygous for different combinations of these genes (AABB,...
Genes A and B are linked. Individual plants homozygous for different combinations of these genes (AABB, aabb, AAbb, aaBB) were crossed at random to produce F1 plants. The F1 plants were self pollinated to produce the F2. The F2 progeny from six of the F1 self pollinations are listed below. Number of F2 plants in each phenotypic class F1 Plant-------------------AB--------------- Ab --------------- aB----------------- ab 1 --------------------------0 ----------------98 ---------------- 0------------------ 32 2 ------------------------- 64 --------------10 -----------------8...
1. Continuous trait can be defined as: a. Having a wide range of possible phenotypes b....
1. Continuous trait can be defined as: a. Having a wide range of possible phenotypes b. Having only a few distinct phenotypes c. Traits that are not influenced by environment d. Traits heavily influenced by environment 2. Quantitative geneticists seek to answer general questions such as: a. To what degree do alleles differ at different loci interact with each other? b. How many genes affect the phenotype? c. What are the relative contributions to the phenotype by the genes? d....
In the following cross (P generation) the genes are inherited independently (not linked) except for genes...
In the following cross (P generation) the genes are inherited independently (not linked) except for genes G and H, which are completely linked and show no recombination: EEffggHH x eeFFGGhh 1. what would be the genotype of their offspring (F1)? 2. what type of gametes (genotypes) could their offspring produce? how many types of gametes would you expect if all four genes assorted independently?
If a genotype is AB/ab and the genes show a 10% recombination frequency, what gametes does...
If a genotype is AB/ab and the genes show a 10% recombination frequency, what gametes does this individual make, in what proportions? A. aB:50%, Ab:50% B. AB: 50%, ab: 50% C. AB:45%, ab: 45%, Ab:5%, aB:5% D. More than one of the above E. AB:5%, ab:5%, Ab:45%, aB: 45% F. AB:40%, ab: 40%, Ab:10%, aB:10% G. AB:10%, ab:10%, Ab:40%, aB: 40%
36. The recessive autosomal maize genes sh and bz are linked and 40 map units apart, If a plant with the genotype sh bz/ sh bz is selfed, what percentage of the progeny will be double recessive? 37. If the recombination frequency between the linked autosomal genes A and B in Drosophila is 15 percent, what phenotypic frequencies would you expect from a cross AB/ab females x AB/ab males? (There is no crossing over in Drosophila males). 38. In the...
Mapping genes with recombination frequencies in Drosophila 1. Suppose you know of three linked loci on the Drosophila X chromosome (a, b, and c). Assume that you are starting out with true-breeding stocks that show all three recessive traits and true-breeding stocks that show all three dominant traits. A. If you wanted to do a 3-point test cross to map the three loci, how would you set up the cross? What genotypes do you use for males and females in...
Mapping genes with recombination frequencies in Drosopna 1. Suppose you know of three linked loci on the Drosophila X chromosome (a, b, and c). Assume that you are starting out with true-breeding stocks that show all three recessive traits and true-breeding stocks that show all three dominant traits. A. If you wanted to do a 3-point test cross to map the three loci, how would you set up the cross? What genotypes do you use for males and females in...
1. Continuous trait can be defined as: a. Having a wide range of possible phenotypes b. Having only a few distinct phenotypes c. Traits that are not influenced by environment d. Traits heavily influenced by environment 2. Quantitative geneticists seek to answer general questions such as: a. To what degree do alleles differ at different loci interact with each other? b. How many genes affect the phenotype? c. What are the relative contributions to the phenotype by the genes? d....
Most questions answered within 3 hours.
-
1. When a nearsighted person looks at an object that is in the
distance with their...
asked 42 minutes ago -
QUESTION 8
Both of these statements will store the same value in the
variable $number
$number...
asked 1 hour ago -
The price of 1 lb of potatoes is $1.75. If all the potatoes sold
today at...
asked 2 hours ago -
Garcia Company issues 20.00%, 15-year bonds with a par value of
$470,000 and semiannual interest payments....
asked 2 hours ago -
In C++ Programming, Try using loops only.
This lab demonstrates the use of the While Loop...
asked 2 hours ago -
Effect of DCMU and sodium azide on Chlamydomonas? We did an
experiment where we had Chlamydomonas...
asked 3 hours ago -
1a) According to the ideal gas law, _______________.
a. a gas has infinite volume at absolute...
asked 5 hours ago -
Oakdale Fashions, Inc. had $245,000 in 2018 taxable income.
Using the tax schedule in Table 2.3...
asked 5 hours ago -
The marketing class at CSUS had an average score of 150. An
educational analyst determined that...
asked 6 hours ago -
Justin Case has purchased a $250 000 home by putting 20 % down
and taking out...
asked 6 hours ago -
1. In a labor market, marginal cost for a firm is
____________.
a. recruiting cost
b....
asked 7 hours ago -
On January 1, 2019, ABC Company issued $60,000,000 of 20-year,
10.5% bonds when the market rate...
asked 7 hours ago