A sex-linked dominant gene, barred (feather pattern) can be used to sex newly hatched chicks. If a barred hen is mated to non-barred rooster, what are the phenotypes of the males and female chicks?
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A sex-linked dominant gene, barred (feather pattern) can be used to sex newly hatched chicks. If a
barred hen is mated to non-barred rooster, what are the
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- In fruit flies and humans, sex is determined by an X-Y system. However, many organisms do not have the X-Y system of sex determination just like in birds. Instead, they have the Z-W system. Male birds are ZZ whereas, female birds are ZW. In chickens, barred feathers (ZB) are dominant over nonbarred feathers (Zb). If a barred female chicken mates a nonbarred male chicken, what is the probability of having barred female offspring? 50% 0% 25% 100%In rabbits, the gene that codes for a spotted coat is dominant over the gene that codes for a solid coat, and the gene for the coat's black color is dominant over the gene for the coat's brown color. If a spotted, black-coated rabbit mates with a solid, brown-coated rabbit, what are the genotypes and phenotypes of their offspring?In fruit flies, gray body (G) is dominant to black body (g). If a male with a black body mates with a female that is homozygous dominant for her gray body what are the possible genotypes and phenotypes of their offspring? Complete the Punnett square below. What is the expected phenotypic ratio among the offspring?
- In dogs, wire-haired is due to a dominant gene (W), smooth-haired is due to its recessive allele (w). (must show Punnett Square) Two wire-haired dogs are mated. Among the offspring of their first litter is a smooth-haired pup. What is the Genotype of the Parents? () If these, two wire-haired dogs mate again, what are the chances that they will produce another smooth-haired pup? What are the chances that the pup will wire-haired pup? (+) A wire-haired male is mated with a smooth- haired female. The mother of the wire-haired male was smooth-haired. What are the phenotypes and genotypes of the pups they could produce? (t)Drosophila have XX/XY sex determination systems just like mammals. In Drosophila, loci for both eye color and body color are on the X chromosome. Red eye color (R) is dominant to white eye color (r), and tan body color (T) is dominant to yellow body color (t). Which of the following is the genotype for a female with a yellow body and red eyes, who is homozygous for eye color? Group of answer choices XRT XrT XRt XRT XRt XRt XRt XRTThere is genre in chickens that controls whether their eggs will be brown or white .Assuming that brown eggs(B)are dominant to white eggs(b) ,what are all of the phenotypes they would result from a croww between two chickens that are heterozygous for laying brown eggs?List the parental genotypes and phenotypes .
- In Drosophila (fruit flies) the gene for eye color is X-linked. The allele R codes for red eyes and is dominant to its allele r, which codes for white eyes. Give the genotypic and phenotypic ratios for the expected offspring from mating a white eyed male and a heterozygous red eyed female.In fruit flies, the wild type (red) eye colour is dominant to white eye colour. This gene is carried on the X chromosome. The allele for wild type body colour is dominant to ebony body colour. This gene is carried on the autosome. A wild type female fruit fly that is homozygous for both traits mates with a male fruit fly with white eyes and ebony body colour. What phenotypic ratio would be expected in their offspring? Ratio: A female with red A female with white A male with red A male with white Phenotype: eyes and wild type eyes and ebony eyes and wild type eyes and ebony body colour body colour body colour body colourThe genetic identity of the female parent is RrGg and the genetic identity of the male parent is Rrgg. They produce 320 offspring together from a single mating: 57 red-eyed females with grey bodies, 61 red-eyed females with yellow bodies, 22 brown-eyed females with grey bodies, 20 brown-eyed females with yellow bodies.59 red-eyed males with grey bodies, 63 red-eyed males with yellow bodies, 20 brown-eyedmales with grey bodies, 18 brown-eyed males with yellow bodies. Show the simultaneous transmission of the two genes involved to give rise to the progeny given with the use of genetic diagrams and summaries as required. (Hint: you are only requiredto show the simultaneous transmission from the P to F1 generations)
- A typical biological female is 46, XX, and a typical biological male is 46, XY. What do 46, XX, and 46, XY indicate?Both parents are dominant tall. Name the 4 possible offspring(d) have both cataracts and fragile bones? In mice, the gene (C) for colored fur is dominant over its allele (c) for white. The gene (N) for normal behavior is dominant over (n) for waltzing. Pairs of mice were mated and the following results obtained. In each case, give the probable genotypes of the parents: 12. colored, normal mated with white, normal, produced 29 colored, normal, and 10 colored a) waltzers. colored normal mated with colored normal produced 38 colored normal, 15 colored waltzers, 11 b) white normal, and 4 white waltzers colored normal mated with white waltzer produced 8 colored normal, 7 colored waltzers, 9 white c) normal, 6 white waltzers. O Amy Brown Science
