3. The allele for long fur (H) is dominant over the allele for short (h) fur in mice. A mouse with long fur is crossed with a short-haired mouse, producing six F1 long-haired mice and seven F1 short-haired mice. Assuming no crossover takes place, how many copies of the short-hair allele ( h) will be present in each cell from an F, long-haired mouse at the following stages? G1 G2 anaphase of mitosis metaphase I of meiosis prophase Il of meiosis (Hint: consider all products of meiosis I) In the gametes made following meiosis (Hint: consider all products of meiosis)

3. The allele for long fur (H) is dominant over the allele for short (h) fur in mice. A mouse with long fur is crossed with a short-haired mouse, producing six F1 long-haired mice and seven F1 short-haired mice. Assuming no crossover takes place, how many copies of the short-hair allele ( h) will be present in each cell from an F, long-haired mouse at the following stages? G1 G2 anaphase of mitosis metaphase I of meiosis prophase Il of meiosis (Hint: consider all products of meiosis I) In the gametes made following meiosis (Hint: consider all products of meiosis)

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter13: Genes, Chromosomes, And Human Genetics

Section: Chapter Questions

Problem 8TYK: Another gene in Drosophila determines wing length. The dominant wild-type allele of this gene...

See similar textbooks

Similar questions

Another gene in Drosophila determines wing length. The dominant wild-type allele of this gene produces long wings; a recessive allele produces vestigial (short) wings. A female that is true- breeding for red eyes and long wings is mated with a male that has purple eyes and vestigial wings. F1 females are then crossed with purple-eyed, vestigial-winged males. From this second cross, a total of 600 offspring are obtained with the following combinations of traits: 252 with red eyes and long wings 276 with purple eyes and vestigial wings 42 with red eyes and vestigial wings 30 with purple eyes and long wings Are the genes linked, unlinked, or sex-linked? If they are linked, how many map units separate them on the chromosome?
In cats, the genotype AA produces tabby fur color; Aa is also a tabby, and aa is black. Another gene at a different locus is epistatic to the gene for fur color. When present in its dominant W form (WW or Ww), this gene blocks the formation of fur color and all the offspring are white; ww individuals develop normal fur color. What fur colors, and in what proportions, would you expect from the cross AaWw Aa Ww?
1. The allele G for yellow stigma is completely dominant to green (g). Supposingtwo strains of autotetraploid plants are available and their genotypes are as follows:GGgg – in this plant the gene is close to the centromereGggg – in this plant the gene is far from the centromere If these two plants are crossed:a) provide the gametes that can be obtained from the two plants;b) provide the genotypic and phenotypic ratios of the offspring. 2. Consider the illustration below. Diagram the configuration you would observe at Anaphase I if crossing-over happens within the inversion. (IMAGE ATTACHED)
1. In guinea pig, fur color is determined by one gene, and fur length by another independently segregating gene. The black fur allele (B) is dominant to brown fur allele (b) and the short allele (S) is dominant to long fur allele (s). From progeny listed in the following table, provide the probable genotype for the parents of each cross. Phenotype of Progeny Black short black long brown short Parents Black short X Black short Black short X Brown long Black long X Black long 90 17 0 32 16 35 29 14 0 brown long 8 15 2. A mouse with the genotype BbccEeFf is mated with another mouse with BBCCEEFF genotype. What is the probability of obtaining the following genotype in the progeny? a. BBCcEeFF b. BbccEEFf C. BbccEeFF 12 3. Determine the type of gametes that are formed from the following individuals with the given genotype? A. AaBbCc B. AABBCc C. AABbCe
1. Imagine you have crossed a pure breeding purple flower and pinched pod shape pea plant with a pure breeding white flower and round pod shape pea plant. What would the phenotype be with respect to the flower color and the pod shape in the F1 generation? ” 2. If one of the F1 was allowed to cross-fertilize, what would be the possible phenotypes in the F2 and how many of each phenotype would you predict out of a total of 200 F2 progeny?”
1. In pea plants, yellow peas are dominant to green peas and purple flowers are dominant to white flowers. For each of the following parental crosses, give the predicted phenotypic and genotypic ratios of the F1 generation. Make punnet squares if necessary. 1. (heterozygous purple-flowered) x (heterozygous purple-flowered) 2. (true breeding white-flowered, yellow pea) x (true breeding purple-flowered, green pea) 3. (heterozygous purple-flowered, yellow pea) x (heterozygous purple-flowered, yellow pea) 2. You have a purple-flowered pea plant. You do not know its genotype. Diagram the test-cross you would conduct to determine the plant’s genotype and what results you would expect if the plant was heterozygous and if the plant was homozygous 3. You are studying five traits in Pentids, an amazonian flying beetle. You have identified each trait as belonging to separate alleles located on separate chromosomes and have categorized those alleles as A,B,C,D, and E, respectively. After years of…
1. In guinea pigs, black hair (B) is dominant to brown hair (b) and short hair (H) is dominant to long hair (h). A heterozygous black, long-haired guinea pig is crossed with a brown, heterozygous short-haired guinea pig. What percentage of the offspring will be black with long hair?
1. In guinea pigs, black coat color (B) is dominant over white (b), and short hair length (H) is dominant over long (h). a) A guinea pig that is homozygous for black coat color and heterozygous for short hair is crossed with a black coat, long-haired guinea pig which had a white-coated mother. Indicate the genotypes of each parent, their gametes, and complete a Punnett square which shows the genotypes of all offspring. b) What is the probability of obtaining offspring with the following characteristics: i) black coat color and long hair ii) a female with white coat color and short hair
1. In four-o’clock plants, the allele for red flower color has an effect that is incompletely dominant over the effect of the white color allele. If a cross between two plants produced 18 red, 32 pink, and 15 white plants, what are the phenotypes of the parents? 10pts 2. What ratios of flower color in four-o’clocks would you expect among the offspring of the following crosses: (a) Red x Red, (b) Red x Pink, (c) White x Pink, and (d) Pink x Pink? 10pts
I. In the fruit fly Drosophila melanogaster, tan body color (B) is dominant to black (b), and dark red eyes (E) is dominant to bright orange (e). A black fly, heterozygous for eye color (Fly #1) is crossed to an orange eyed fly, heterozygous for body color (Fly #2). What are... Genotypes of the parents? Gametes from each parent? Ratios of gametes from each parent? Complete the following Punnett square. Indicate gamete genotypes from each parent and all offspring genotypes. Fly #1 What proportion of offspring are... Tan & dark red? Tan & orange? Black & dark red? Black & orange? Probability (P) of Aa Bb Dd = P (Aa) A. || B. III II. What is the probability that this pair of parents will produce the indicated offspring? Aa Bb DD x aa Bb Dd Aa Bb Dd. Punnett squares for each trait can help with this! IV Mode of inheritance = || #1 IV #1 #1 BIO 340 ACTIVITY #3: HYBRID CROSSES, PROBABILITY & PEDIGREES Name (Last, First) III. For each of these three pedigrees, determine the likely mode of…
I. In the fruit fly Drosophila melanogaster, tan body color (B) is dominant to black (b), and dark red eyes (E) is dominant to bright orange (e). A black fly, heterozygous for eye color (Fly #1) is crossed to an orange eyed fly, heterozygous for body color (Fly #2). What are... Genotypes of the parents? Gametes from each parent? Ratios of gametes from each parent? Complete the following Punnett square. Indicate gamete genotypes from each parent and all offspring genotypes. Fly #1 What proportion of offspring are... Tan & dark red? Tan & orange? Black & dark red? Black & orange? Probability (P) of Aa Bb Dd = P (Aa) A. B. I II. What is the probability that this pair of parents will produce the indicated offspring? Aa Bb DD x aa Bb Dd Aa Bb Dd. Punnett squares for each trait can help with this! IV Mode of inheritance = C. I II BIO 340 ACTIVITY #3: HYBRID CROSSES, PROBABILITY & PEDIGREES Name (Last, First) III. For each of these three pedigrees, determine the likely mode of inheritance and…
6. In Drosophila melanogaster, the wild-type eye colour is dark red. A pure-breeding mutant strain with white eyes also exists. When reciprocal crosses are made between (i) a white-eyed male a wild-type female, and (ii) a white-eyed female a wild-type male, the progeny are as follows: (1) P: White-eyed male x red-eyed female F1: red-eyed males and females F2: 100 progeny; 27 red-eved males, 24 white-eyed males, 49 red-eyed females (ii) P: red eyed male x white-eyed female F1: white-eyed males and red-eyed females F2: 100 progeny; 23 red-eved males 26 white-eyed males, 28 red-eyed females, 23 white-eyed females. How do you interpret these data?