Question

You begin working in a genetics lab that uses Drosophila and find that a previous student has left behind a bottle of flies that have a yellow (instead of brown) body with no information about the mutation that leads to the yellow body color. You first determine that these flies are true breeding, and then set up some crosses. Cross 1: You cross yellow females with true breeding wild type males. In the F1s, all of the females have brown bodies, while all of the males have yellow bodies. The F1s were crossed, and results are provided in the table. Cross 2: You cross yellow males with true breeding wild type females. All of the F1s flies have brown bodies. The F1s were crossed, and results are provided in the table. Do these data suggest that the yellow mutation is sex linked? Why or why not?F2 Phenotypes Cross 1: genotype Cross 1: Cross 1: observed | Expected Cross 2: Cross 2: Cross 2: genotype observed | Expected

0 0
Add a comment Improve this question Transcribed image text
Answer #1

cross- XX (yellow) XY tty t Yellow.) 1. (Brown) Fi no xxt xxt ху хy Brown - Yellow xx1 x. xy .. 7 T . xy sixty F2 .. 1. XX. .cross 2 xy (Yellow) x x . (Poroin) vrt xxt yty F1 .. xty Brownxxt x xty. (Brown) (Brown) xxt (pdrown txt (mmown) xy (yellow) xty (Brown) All Brown 1: 1. 228 1. Yes, the data suggests that4 No. of classes a df: 4-12 3. HOS y2 = (838-850) + (861-850) ; (257-450)(844 -25o} 250 250 T 250 Asp 0.576 t 0.484 f 0:196

Felt great to answer. Good luck!

Add a comment
Know the answer?
Add Answer to:
You begin working in a genetics lab that uses Drosophila and find that a previous student...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

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 Drosophila, the autosomal recessive brown eye color mutation (b) displays interactions with both the X-linked...

    In Drosophila, the autosomal recessive brown eye color mutation (b) displays interactions with both the X-linked recessive vermilion mutation (v) and the autosomal recessive scarlet (s) mutation. Flies homozygous for brown and simultaneously hemizygous or homozygous for vermilion have white eyes. Flies simultaneously homozygous for both the brown and scarlet mutations also have white eyes. Flies that are wildtype at all 3 loci have wildtype eye color. Flies that are homozygous or hemizygous for the recessive mutant at only one...

  • GENETICS: please help explain the following question. Will give a thumbs up if given the correct...

    GENETICS: please help explain the following question. Will give a thumbs up if given the correct information. z mutation of the ellow (zeste) 11. The partially recessive, X-linked Drosophila gene zeste (z) can produce a yellow eye color only in flies that have two or more the wild-type white (w) gene. Using this tandem duplications of the w" gene called property identified. Males with the genotype z wtRy t zeste ey the genotype y zl VV spl/),t ?? w+R spl+....

  • genetics: sorted independently and completely linked Analyze the following fruit fly cross. In this cross there...

    genetics: sorted independently and completely linked Analyze the following fruit fly cross. In this cross there are two autosomal traits that are influenced by two distinct genes and the F2 generation came from crossing an F1 male with an F1 female. P: true breeding grey eyed; brown bodied males x true breeding red eyed; black bodied females F1: all offspring are red eyed; brown bodied F2: ? When the Fy flies are allowed to self cross, what percentage of F2...

  • genetics Analyze the following fruit fly cross. In this cross there are two autosomal traits that...

    genetics Analyze the following fruit fly cross. In this cross there are two autosomal traits that are influenced by two distinct genes and the F2 generation came from crossing an F1 male with an F1 female. P: true breeding grey eyed; brown bodied males x true breeding red eyed; black bodied females F1: all offspring are red eyed; brown bodied F2: ? When the F1 flies are allowed to self cross, what percentage of F2 flies will have both brown...

  • In Drosophila, the X-linked recessive mutation vermilion (XV) causes bright red eyes, in contrast to the...

    In Drosophila, the X-linked recessive mutation vermilion (XV) causes bright red eyes, in contrast to the brick-red eyes of wild type (X+). Part A separate autosomal recessive mutation (br), causes the eyes to be brown. Predict the F1 results of the following cross: normal females x white males. (Assume that the parents are homozygous.) Flies carrying both mutations lose all pigmentation and are white-eyed. Label the diagram by dragging the labels to the appropriate targets. Note: not all labels will...

  • Drosophila genetics hw. Can someone help explain this You are doing a genetics experiment with the...

    Drosophila genetics hw. Can someone help explain this You are doing a genetics experiment with the fruit fly. In the "P" generation, you cross two true-breeding flies. The female parent is brown and wingless and the male parent is black with normal wings. All of the flies in the F1 generation are brown and have normal wings. Indicate the alleles associated with dominant phenotypes by uppercase letters and alleles associated with recessive phenotypes by lowercase letters. Assume the genes are...

  • Please help me solve these review problems, please show work it'll help me understand how to...

    Please help me solve these review problems, please show work it'll help me understand how to solve them if on my upcoming exam. Thank you, and I will be sure to give thumbs up. If short hair (L) is dominant to long hair (I) and black hair (B) is dominant to brown (b) then to determine the genotype of a black short haired animal it should be crossed with c. llBb d. lbb e. Llbb White eyes is an X-linked...

  • Several crosses were made between female fruit flies with yellow bodies and short bristles and male...

    Several crosses were made between female fruit flies with yellow bodies and short bristles and male flies with tan bodies and long bristles. The flies were from a mixed population, so they were not necessarily true breeding. The results are shown below. Cross 1: Females all tan with short bristles; males all yellow with short bristles Cross 2: Females half tan with short bristles, half tan with long bristles; Males half yellow with short bristles; half yellow with long bristles....

  • Genetics questions, i need help! 1) For the Drosophila red/white cross, you crossed red females and...

    Genetics questions, i need help! 1) For the Drosophila red/white cross, you crossed red females and white males (w'w, wy). a) Draw the Punnett Square for this cross (F1). What is the ratio of red females:red males? b) Suppose in the F1 generation, you observed 70 red females and 30 red males. Do a Chi- Square Test to test the hypothesis of the ratio you found in part (a) above. Do you accept or reject the hypothesis? c) Draw the...

  • BIO340 Recitation 5 Spring 2020 Your professor is having you look at two genes in Drosophila...

    BIO340 Recitation 5 Spring 2020 Your professor is having you look at two genes in Drosophila fruit flies to determine experimentally whether they are linked. One trait is eye color and two alleles are present at the gene: se+ is the wild-type allele for red eyes, and se is the mutant, recessive allele for sepia eyes. The second trait is body color and two alleles are present at this gene: e+ is the wild-type allele for grey body, and e...

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
ADVERTISEMENT