HomeworkLib
Question

n a series of two-point map crosses involving four genes the following recombinant (single crossover) frequencies...

n a series of two-point map crosses involving four genes the following recombinant (single crossover) frequencies were observed.  

A-D 30

C-B 25

D-B 15

A-C 40

D-C 10

A-B 15

What is the order of the genes if “A” is near one end?

science   biology   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

The recombination frequency is directly proportional to distance between two genes. Hre recombination frequency is highest (40) between A and C gene. So two terminal genes are A and C. Lowest recombination frequency is between D and C. So D is adjacent to C gene. By observing other recombiation frequency it is evident that the correct order of the genes is

A ------B........D...C

0 0
Add a comment
Know the answer?
Add Answer to:
n a series of two-point map crosses involving four genes the following recombinant (single crossover) frequencies...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • In a series of two-point map crosses involving five genes located on chromosome II in Drosophila,...

    In a series of two-point map crosses involving five genes located on chromosome II in Drosophila, the following recombinant (single-crossover) frequencies were observed: If the ado gene is present near the end of chromosome II match the relative position of the other genes.

  • In a series of two-point map crosses involving five genes located on chromosome II in Drosophila,...

    In a series of two-point map crosses involving five genes located on chromosome II in Drosophila, the following recombinant (single-crossover) frequencies were observed: pr-vg 20 vg-b 5 vg-c 30 adp-c 5 adp-b 40 adp-pr 15 pr-c 10 pr-b 25 c-b 35 If the adp gene is present near the end of chromosome II match the relative position of the other genes. Please explain how you got the answer       -       A.       B.       C....

  • The data below is from a series of two-point crosses. Use the recombination frequencies to construct...

    The data below is from a series of two-point crosses. Use the recombination frequencies to construct a genetic map of all three genes. pr – adp          21% pr – vg             29% vg – adp          8% A fourth gene, cv, is found to have 4% recombination when tested with pr. Next you plan to test cv and adp. Predict the outcome of the cross between cv and adp.

  • genetics-please show all work 8. (9 pts) A series of two-point crosses were carried out among...

    genetics-please show all work 8. (9 pts) A series of two-point crosses were carried out among six loci (a, b, c, d, e and f), producing the following recombination frequencies. The six loci map to three different linkage groups. Map the six loci, showing their linkage groups (you can use a single line for each linkage group), the order of the loci in each linkage group, and the distances between the loci of each group. If there is only one...

  • SO/ do no 2. A series of 2-point crosses were carried out among 7 loci (a, b, c, d, e, f, and g. producing the following recombination frequencies. Map the 7 loci, showing their linkage groups, t...

    SO/ do no 2. A series of 2-point crosses were carried out among 7 loci (a, b, c, d, e, f, and g. producing the following recombination frequencies. Map the 7 loci, showing their linkage groups, the order of the loci in each linkage group, and distances berween the loci of each group. () | % Reco Loci % Recombination 50 26 50 50 50 50 a- b a-c a-d a- e 50 50 12 50 50 4 10 50...

  • 3. In a series of mapping experiments, the recombination frequencies for four different linked genes of...

    3. In a series of mapping experiments, the recombination frequencies for four different linked genes of Drosophila were determined as shown in the figure below. Wildtype (dominant) is flat wings, medium leg length, brown abdomen, and medium bristle length. w curled wings 1 short legs a - red abdomen b long bristles g23 O a 12 11 0 b 20 3 8 0 w a b The numbers in the boxes are the recombinatior frequencies in between the genes (in...

  • 1. A genetic cross in which the inheritance of two traits is observed is called a...

    1. A genetic cross in which the inheritance of two traits is observed is called a A) Dihybrid cross. B) Monohybrid cross C) Backeross D) Testcross 2. For single crossovers, the frequency of recombinant gametes is half the frequency of crossing over because A) A testeross between a homozygous and heterozygote produces 1/2 heterozygous and 1/2 homozygous progeny. B) The frequency of recombination is always 50%. C) Each crossover takes place between only two of the four chromatids of a...

  • A series of two-point crosses among fruit flies is carried out between gees for brown eyes...

    A series of two-point crosses among fruit flies is carried out between gees for brown eyes (bw), arc wings (a), vestigal wings (vg), ebony body color (e), and curved wings (cv). The following number of nonrecombinant and recombinant progeny were obtained from each crosss: Genes in cross Progeny (NR) Progeny (R) a, bw 2796 1434 a, cv 2102 305 a, e 3200 3200 a, vg 5172 2379 bw, cv 4614 1706 bw, e 4150 4150 bw, vg 2224 117 cv,...

  • . Multiple two-point testcross experiments were performed and recombination frequencies between each gene pair were calculated....

    . Multiple two-point testcross experiments were performed and recombination frequencies between each gene pair were calculated. Draw a map of the genes in the correct order. Write the distance between each gene in map units. • C – D 50% RF • C – F 46% RF • B – C 25% RF • D – F 10% RF • D - B 30% RF • B – F 20% RF

  • Problem I A series of two-point crosses were carried out among seven loci (a, b, c,...

    Problem I A series of two-point crosses were carried out among seven loci (a, b, c, d, e, f, and g), producing the following recombination frequencies. Map the seven loci, showing their linkage groups, the order of the loci in each linkage group, and distances between the loci of each linkage group. Loci %    Recombination   Loci %    Recombination a - b    50    c - d   50 a - c    50   c - e   26 a - d    12    c -...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT