Question

In: Biology

Suppose that you are working with flies that are segregating three traits. You cross a homozygous...

Suppose that you are working with flies that are segregating three traits. You cross a homozygous truncated, vestigial, shaven fly with a homozygous wild-type, apterous, spineless fly and the F1 flies are all wild-type, apterous, spineless. You next backcross the F1 flies to a truncated, shaven, vestigial parent. The progeny from this type of cross are shown below:

truncated apterous shaven 94

truncated vestigial shaven 425

truncated apterous spineless 46

truncated vestigial spineless 19

wild-type apterous shaven 16

wild-type vestigial shaven 46

wild-type apterous spineless 448

wild-type vestigial spineless 106

Total 1200

Draw a map and show the distances between the three genes.

Solutions

Expert Solution

gladiator answered 1 week ago
Next > < Previous

Related Solutions

A parental cross between homozygous cinnabar flies (cnbw+/cnbw+) and homozygous brown flies (cn+bw/cn+bw) is done. Use...
A parental cross between homozygous cinnabar flies (cnbw+/cnbw+) and homozygous brown flies (cn+bw/cn+bw) is done. Use a Punnett square to show how the F1 cross will not produce homozygous double mutant flies in the F2 generation.
If you have P generation where one parent is homozygous dominant for both traits and the...
If you have P generation where one parent is homozygous dominant for both traits and the other parent is homozygous recessive for both traits, what will the F1 genotypes be? If you then cross F1 x F1, what will the F2 genotypes be? Assuming that the trait is one of “complete dominance”, what will be the F2 frequency of offspring with 1) both dominant traits, 2) one trait dominant and one trait recessive, 3) one trait recessive and one trait...
complete a punnet square for a cross between a homozygous red-flowered snapdragon (RR) and a homozygous...
complete a punnet square for a cross between a homozygous red-flowered snapdragon (RR) and a homozygous white-flowered snapdragon(rr). give the ratio for the phenotype and the genotype.
Mapping traits to a chromosome Fruit flies have four chromosomes. Fruit flies also have a number...
Mapping traits to a chromosome Fruit flies have four chromosomes. Fruit flies also have a number of body markers that are useful for mapping genes to given chromosomes. Chromosome I is the X chromosome, which has eye color alleles w+ (red eyes, dominant) and w- (white eyes, recessive). Curly O (Cyo), located on chromosome II, is a dominant marker mutation which causes the wings to curl on the ends instead of beings straight (WT). Stubble (Sb), a dominant marker mutation...
2. Cross a homozygous tall yellow seeded plant with a homozygous short green seeded plant. This...
2. Cross a homozygous tall yellow seeded plant with a homozygous short green seeded plant. This is called the P1 cross, and it will produce offspring called the F1 generation. Tallness is dominant to shortness, so use a capital T to represent the tallness allele and lower case t to represent the shortness allele. Yellow seeds are dominant to green sees, so use a capital Y to represent the yellow seed allele and a lower case y to represent the...
2. Cross a homozygous tall yellow seeded plant with a homozygous short green seeded plant. This...
2. Cross a homozygous tall yellow seeded plant with a homozygous short green seeded plant. This is called the P1 cross, and it will produce offspring called the F1 generation. Tallness is dominant to shortness, so use a capital T to represent the tallness allele and lower case t to represent the shortness allele. Yellow seeds are dominant to green sees, so use a capital Y to represent the yellow seed allele and a lower case y to represent the...
Suppose that we cross two flies: One is a female that is b+b vg+vg; the other...
Suppose that we cross two flies: One is a female that is b+b vg+vg; the other is a male that is homozygous recessive. The female has grey (wild-type) body and normal (wild-type) wing length. The male is black-bodied with vestigial wings. The female's parents (I'm going to refer to them as the grandparents) were a true-breeding grey, normal fly and a true-breeding black, vestigial fly. A) What is the frequency of phenotypes you would expect to see in their offspring?...
What ratios result when three genetic traits are analyzed together in a hybrid cross?
What ratios result when three genetic traits are analyzed together in a hybrid cross?
Corn #2 is a standard F2 generation dihybrid cross. The traits you will be following is...
Corn #2 is a standard F2 generation dihybrid cross. The traits you will be following is color and seed shape. The following counts, in red, were determined in the lab Number of yellow, round 147 Number of purple, round 452 Number of yellow, wrinkled 43 Number of purple, wrinkled 151 What is the expected ratio? Perform a chi square below. Determine your probability value ______ and analyze what that means.
Flies homozygous or hemizygous for the w1 allele of the white gene (Xw1/Xw1 or Xw1/Y) have...
Flies homozygous or hemizygous for the w1 allele of the white gene (Xw1/Xw1 or Xw1/Y) have white eyes, whereas flies homozygous or hemizygous for the wa allele of the white gene (Xwa/Xwaor Xwa/Y) have orange eyes.       What is the dominance relationship between the w1 and the wa alleles, knowing that in the offspring of a cross between white-apricot females and white males the heterozygous females of the F1 generation (Xwa/ Xw1) have lighter orange eyes than homozygous Xwa/Xwa parental...
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT