Homework Answers
Answer:For both offsprings, the recessive phenotypes are : 52
For both recessive phenotypes the offsprings are 52
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Genes A and B are linked and 32 map units apart (A is dominant over a,...
DNA has a strong attraction to nucleosomes because: Question 5 Not yet answered Points out of...
DNA has a strong attraction to nucleosomes because: Question 5 Not yet answered Points out of 2.50 P Flag question Select one: O a. DNA is positively charged and nucleosomal histones are negatively charged O b. DNA and nucleosomal histones are both positively charged and associate together O c. DNA and nucleosomal histones are both neutral and associate togethe о d. DNA and nucleosomal histones are both negatively charged and associate together о e. DNA is negatively charged and nucleosomal...
36. The recessive autosomal maize genes sh and bz are linked and 40 map units apart,...
36. The recessive autosomal maize genes sh and bz are linked and 40 map units apart, If a plant with the genotype sh bz/ sh bz is selfed, what percentage of the progeny will be double recessive? 37. If the recombination frequency between the linked autosomal genes A and B in Drosophila is 15 percent, what phenotypic frequencies would you expect from a cross AB/ab females x AB/ab males? (There is no crossing over in Drosophila males). 38. In the...
The B and N genes are 25 map units apart on a chromosome. a) Following a...
The B and N genes are 25 map units apart on a chromosome. a) Following a dihybrid testcross, how many offspring of 250 would you expect to display a recombinant phenotype? a) If you performed a dihybrid testcross, with a cis dihybrid, what would be the genotypes of both recombinant offspring phenotypic classes?
1) (3 pts) The following two recessive genes are known for corn: brittle endosperm (b) and...
1) (3 pts) The following two recessive genes are known for corn: brittle endosperm (b) and glossy leaf (g). Two true-breeding plants with contrasting phenotypes are crossed (both plants are homozygous for both genes). The Fi offspring are all wild type. Then, an F1 plant is test-crossed with a brittle/glossy parent, and the following offspring are obtained: 16 238 wild type glossy brittle glossy, brittle 254 25 (a) Explain your reasoning as to why these data indicate that the two...
Genes A and B are 5 units apart. A doubly heterozygous female and a homozygous recessive...
Genes A and B are 5 units apart. A doubly heterozygous female and a homozygous recessive male are crossed. Of ten thousand offspring, how many recombinant offspring would be produced? A. 2500 B. 250 C. 50 D. 500 E. 5
In maize (corn), assume that the genes A and B are linked and 30 map units...
In maize (corn), assume that the genes A and B are linked and 30 map units apart. If a plant of Ab/aB is selfed, what proportion of the progeny would be expected to be of ab/ab genotype? a. 30% b. 4.5% c. 9% d. 15% e. 2.25%
genes A and B are 20 map units apart. If you cross Ab/aB xab/ab, how many...
genes A and B are 20 map units apart. If you cross Ab/aB xab/ab, how many each progeny type would you expect if total progeny was 1000. a. AaBb(AB/ab) b. Aabb ( Ab/ab) c. aaBb(aB/ab) d. aabb(ab/ab) is b and c the parental ? would that mean that b and c are 20 ? Thanks
11-16. Three genes A, R. and T are linked. Als a dominant allele for red leaves,...
11-16. Three genes A, R. and T are linked. Als a dominant allele for red leaves, while the recessive phenotype is green. T is the dominant allele for all plants, while gives dwarf plants. R is the dominant allele for ragged leaf margins while gives smooth leaf margins. Questions 11-16 contain statements about these genes-answer whether each statement is true or false. Consult the accompanying diagram which represents the chromosomes in the heterorygous parent of a test cross while answering...
In sweet peas, two genes (genes A and B) control flower color. The dominant alleles of...
In sweet peas, two genes (genes A and B) control flower color. The dominant alleles of both genes produce enzymes that function in the biochemical pathway shown to convert colorless precursors to a purple pigment. The recessive alleles do not produce enzyme. Therefore, at least one dominant allele of both gene A and gene B are required for purple flowers. Answer the questions about this biochemical pathway. ΑΑ, Αα BB, Bb Enzyme A Enzyme B Colorless precursor 1 Colorless precursor...
In flamingos, genes A and B are known to be 21 map units apart on chromosome...
In flamingos, genes A and B are known to be 21 map units apart on chromosome #5. You mate an AA:BB male with an aa:bb female to produce F1 flamingos. a. What gametes will be made by these F1 individuals and in what proportions? b. When the F1's are bred to each other, they produce a total of 276 offspring. How many of these offspring would you predict should have the genotype Aa:BB?
DNA has a strong attraction to nucleosomes because: Question 5 Not yet answered Points out of 2.50 P Flag question Select one: O a. DNA is positively charged and nucleosomal histones are negatively charged O b. DNA and nucleosomal histones are both positively charged and associate together O c. DNA and nucleosomal histones are both neutral and associate togethe о d. DNA and nucleosomal histones are both negatively charged and associate together о e. DNA is negatively charged and nucleosomal...
36. The recessive autosomal maize genes sh and bz are linked and 40 map units apart, If a plant with the genotype sh bz/ sh bz is selfed, what percentage of the progeny will be double recessive? 37. If the recombination frequency between the linked autosomal genes A and B in Drosophila is 15 percent, what phenotypic frequencies would you expect from a cross AB/ab females x AB/ab males? (There is no crossing over in Drosophila males). 38. In the...
The B and N genes are 25 map units apart on a chromosome. a) Following a dihybrid testcross, how many offspring of 250 would you expect to display a recombinant phenotype? a) If you performed a dihybrid testcross, with a cis dihybrid, what would be the genotypes of both recombinant offspring phenotypic classes?
1) (3 pts) The following two recessive genes are known for corn: brittle endosperm (b) and glossy leaf (g). Two true-breeding plants with contrasting phenotypes are crossed (both plants are homozygous for both genes). The Fi offspring are all wild type. Then, an F1 plant is test-crossed with a brittle/glossy parent, and the following offspring are obtained: 16 238 wild type glossy brittle glossy, brittle 254 25 (a) Explain your reasoning as to why these data indicate that the two...
11-16. Three genes A, R. and T are linked. Als a dominant allele for red leaves, while the recessive phenotype is green. T is the dominant allele for all plants, while gives dwarf plants. R is the dominant allele for ragged leaf margins while gives smooth leaf margins. Questions 11-16 contain statements about these genes-answer whether each statement is true or false. Consult the accompanying diagram which represents the chromosomes in the heterorygous parent of a test cross while answering...
In sweet peas, two genes (genes A and B) control flower color. The dominant alleles of both genes produce enzymes that function in the biochemical pathway shown to convert colorless precursors to a purple pigment. The recessive alleles do not produce enzyme. Therefore, at least one dominant allele of both gene A and gene B are required for purple flowers. Answer the questions about this biochemical pathway. ΑΑ, Αα BB, Bb Enzyme A Enzyme B Colorless precursor 1 Colorless precursor...
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