Homework Answers
a) w+w bb sp+sp+ pxpx, the female parent has red eyes, black bodies, no extra bristles, extra veins on their wings ( since the fly has one dominant allele w+, it is homozygous for bb, and it has sp+ allele so it has no extra bristles, and it is homozygous for pxpx so has extra veins on the wings)
w/Y b/b sp+/sp+ px/px
this fly has only w allele so has white eyes, it is homozygous for b so has black bodies, it is homozygous for sp+ so no extra bristles on the body, and it is homozygous for px so so has extra veins on the wings
so the phenotype is white eyes, black bodies, no extra bristles, extra veins on their wings
b) w/Y b/b sp+/sp+ px/px can produce 2 types of gametes, genotype of the gametes are
wbsp+px and Ybsp+px
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5. In Drosophila the genes white (w) black (b), speck (sp), and plexus (px) all map...
Genetic Linkage The six genes listed below are all located on Chromosome 2 of Drosophila melanogaster....
Genetic Linkage The six genes listed below are all located on Chromosome 2 of Drosophila melanogaster. Your goal is to construct a genetic map of Chromosome 2. That is, determine the order of these genes along chromosome 2 and the map distance in centimorgans between each gene. To complete this task, you will be given the results of a variety of two-point test crosses involving these genes. For each test cross you may assume that the female is heterozygous and...
4. There are three genes on the X-chromosome in drosophila, yellow (y), white (w), and cut...
4. There are three genes on the X-chromosome in drosophila, yellow (y), white (w), and cut (ct). A yellow-bodied, white-eyed, and a homozygous normal winged female fly was crossed to a male with wild type body, wild type eyes, and cut wings. The Fi females were wild type for all three traits, while the Fi males had yellow bodies, white eyes, normal wings. The Fi females were crossed to yellow bodied, white eyed, cut wing males. The resulting F2 progeny...
Practice 7.1. Cross a female fly with the eyeless mutation (a) for eye shape but normal...
Practice 7.1. Cross a female fly with the eyeless mutation (a) for eye shape but normal bristle (b+) to a male fly with wild type eye shape (a+) with shaven bristles (b). Both of these genes are located on Mate a female fly with mutant traits of a black body (c), bristle (b), and wing veins (v) to a wild- type male (normal body color (c+), bristle (b+), and wing size (v+)]. These three alleles are located on chromosome II...
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+....
2. Three genes and their mutations are found on the third chromosome in fruit fly Drosophila...
2. Three genes and their mutations are found on the third chromosome in fruit fly Drosophila melanogaster. Of these three genes, scarlet eyes (st) are recessive to red eyes (st"), cbony body color (eb) is recessive to gray body color (eb"), and spineless (ss), the st presence of small bristles, is recessive to normal bristles (ss). You eb SS were given a heterozygous fly (st'st eb'eb ss'ss) and were asked to eb ss design an experiment to map the distance...
Please read the question carefully. 7:18 PM Three-point cross #3 2017-09-28 In Drosophila, the genes for...
Please read the question carefully.
7:18 PM Three-point cross #3 2017-09-28 In Drosophila, the genes for withered wings (whd), smooth abdomen (sm) and speck body (sp) are located on chromosome 2 and are separated by the following map distances: whd-(30.5) A female with withered wings and a smooth abdomen was mated to a male with a speck body The resulting phenotypically wild-type females were mated with males that had the mutant phenotype for all three traits, producing 2000 offspring. Question:...
In Drosophila (fruit flies) the genes how, dumpy and ebony are located on chromosome 3. LOF...
In Drosophila (fruit flies) the genes how, dumpy and ebony are located on chromosome 3. LOF = loss of function. Flies homozygous for a LOF mutation (no gene product made) in ebony have dark black bodies. Flies homozygous for a LOF mutation (no gene product made) in dumpyhave truncated (short) wings. Flies homozygous for a partial LOF mutation (some gene product made but significantly less than normal) in how have wings that will not fold down (held out wings; that's...
In Drosophila melanogaster, the recessive X-linked alleles white (w), miniature (m) and forked (f) give the...
In Drosophila melanogaster, the recessive X-linked alleles white (w), miniature (m) and forked (f) give the phenotypes white eyes, miniature wings and forked brushes. The recombination between the w and m loci is 35%, and between the m and f loci, 20%. Wild-type males were crossed with females from a strain that was homozygous recessive for the three alleles, then the F1 flies were sibling mated. What phenotype frequencies are expected in F2 a) if there is no interference, and...
all of them please Question 10 (1 point) In Drosophila, the mutant black (b) has a...
all of them please
Question 10 (1 point) In Drosophila, the mutant black (b) has a black body and the wild-type (b+) has a gray body; the mutant vestigial (v) has wings that are short and crumpled compared the long wild-type wings (V+). These genes are linked and are located on the X- chromosome. A cross between a female fly and a black, vestigial winged male fly produced the following progeny: gray (b+), normal (v+) 20 gray (b+), vestigial (v)...
In Drosophila, the autosomal recessive traits for dumpy wings (dp) and cinnabar eyes (cn) are found...
In Drosophila, the autosomal recessive traits for dumpy wings (dp) and cinnabar eyes (cn) are found on chromosome 2, separated by 44 map units. The allele for shaven bristles (sv) is found on chromosome 4 and is also recessive. A female with shaven. bristles is crossed to a male expressing dumpy wings and cinnabar eyes. FI females are test-crossed to males expressing all three traits. 3. What proportion of F2 flies (of either sex) will be completely wild type? a....
Genetic Linkage The six genes listed below are all located on Chromosome 2 of Drosophila melanogaster. Your goal is to construct a genetic map of Chromosome 2. That is, determine the order of these genes along chromosome 2 and the map distance in centimorgans between each gene. To complete this task, you will be given the results of a variety of two-point test crosses involving these genes. For each test cross you may assume that the female is heterozygous and...
4. There are three genes on the X-chromosome in drosophila, yellow (y), white (w), and cut (ct). A yellow-bodied, white-eyed, and a homozygous normal winged female fly was crossed to a male with wild type body, wild type eyes, and cut wings. The Fi females were wild type for all three traits, while the Fi males had yellow bodies, white eyes, normal wings. The Fi females were crossed to yellow bodied, white eyed, cut wing males. The resulting F2 progeny...
Practice 7.1. Cross a female fly with the eyeless mutation (a) for eye shape but normal bristle (b+) to a male fly with wild type eye shape (a+) with shaven bristles (b). Both of these genes are located on Mate a female fly with mutant traits of a black body (c), bristle (b), and wing veins (v) to a wild- type male (normal body color (c+), bristle (b+), and wing size (v+)]. These three alleles are located on chromosome II...
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+....
2. Three genes and their mutations are found on the third chromosome in fruit fly Drosophila melanogaster. Of these three genes, scarlet eyes (st) are recessive to red eyes (st"), cbony body color (eb) is recessive to gray body color (eb"), and spineless (ss), the st presence of small bristles, is recessive to normal bristles (ss). You eb SS were given a heterozygous fly (st'st eb'eb ss'ss) and were asked to eb ss design an experiment to map the distance...
Please read the question carefully.
7:18 PM Three-point cross #3 2017-09-28 In Drosophila, the genes for withered wings (whd), smooth abdomen (sm) and speck body (sp) are located on chromosome 2 and are separated by the following map distances: whd-(30.5) A female with withered wings and a smooth abdomen was mated to a male with a speck body The resulting phenotypically wild-type females were mated with males that had the mutant phenotype for all three traits, producing 2000 offspring. Question:...
all of them please
Question 10 (1 point) In Drosophila, the mutant black (b) has a black body and the wild-type (b+) has a gray body; the mutant vestigial (v) has wings that are short and crumpled compared the long wild-type wings (V+). These genes are linked and are located on the X- chromosome. A cross between a female fly and a black, vestigial winged male fly produced the following progeny: gray (b+), normal (v+) 20 gray (b+), vestigial (v)...
In Drosophila, the autosomal recessive traits for dumpy wings (dp) and cinnabar eyes (cn) are found on chromosome 2, separated by 44 map units. The allele for shaven bristles (sv) is found on chromosome 4 and is also recessive. A female with shaven. bristles is crossed to a male expressing dumpy wings and cinnabar eyes. FI females are test-crossed to males expressing all three traits. 3. What proportion of F2 flies (of either sex) will be completely wild type? a....
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