Please answer all the question 1.Unlike some other haploid fungi, S. fimicola is homothallic. It produces perithecia from intrastrain mating, which have identical parents. How do you think this effect will show up in your data? more crossing over asci of uniform color asci with equally divided colors only black asci 2.S. fimicola is a haploid species with both the mature cells and the spores having only single chromosomes (seven total). Diploid cells only exist temporarily during reproduction. What proportions of offspring do you expect from black and tan parents? a. 100% black b. 75% black and 25% tan c. 50% black and 50% tan d. 100% tan 3.Gray and tan color in S. fimicola are caused by mutations of different genes. If neither is mutated, black spores result. What color do you think will result if both are mutated? tan B. gray C. black D. no color 4.During reproduction, one mitotic division occurs after meiosis. The entire operation of meiosis and mitosis occurs with an ascus, which contains the resulting ascospores lined up in a row just as they were created. Each ascospore contains one haploid nucleus and displays the color phenotype represented by its alleles. Select the sequence of ascospore colors in the ascus that you believe will not occur in a wild-tan mating. Here, T is the wild type, and t is the tan type. a. TTTTtttt B. TTttTTtt C. ttTTTTtt D. TtTtTtTt 5.If no crossing over occurs during meiosis, then the chromosomes remain unaltered. Which of the following ascospore sequences would you expect to see from a wild-tan mating without any crossing over? Here, T is the wild type, and t is the tan type. TTTTtttt TTttTTtt ttTTTTtt TtTtTtTt 6.If the genes for gray and tan are linked (on the same chromosome), and no crossing over occurs, which of the following do you figure is a possible outcome for the tan-gray cross? Let B be the black phenotype, G be the gray phenotype, and T be the tan phenotype. a. BBBBTTTT b. BBBBGGGG c. GGGGTTTT d. GGTTGGTT e. BBTTGGBB 7.If the genes for gray and tan are not linked (on separate chromosomes), and no crossing over occurs, which of the following do you figure is a possible outcome for the tan-gray cross? Let B be the black phenotype, G be the gray phenotype, T be the tan phenotype, and C the phenotype for both mutants. a. BBBBGGGG b.CCCCGGGG c.TTTTCCCC d.CCCCBBBB
Please answer all the question
|
1.Unlike some other haploid |
|
|
|
|
|
2.S. fimicola is a haploid species with both the mature cells and the spores having only single chromosomes (seven total). Diploid cells only exist temporarily during reproduction. What proportions of offspring do you expect from black and tan parents? |
|
a. 100% black |
|
b. 75% black and 25% tan |
|
c. 50% black and 50% tan |
|
d. 100% tan |
|
3.Gray and tan color in S. fimicola are caused by mutations of different genes. If neither is mutated, black spores result. What color do you think will result if both are mutated? |
|
|
B. gray |
|
C. black |
|
D. no color |
|
4.During reproduction, one mitotic division occurs after meiosis. The entire operation of meiosis and mitosis occurs with an ascus, which contains the resulting ascospores lined up in a row just as they were created. Each ascospore contains one haploid nucleus and displays the color |
|
a. TTTTtttt |
|
B. TTttTTtt |
|
C. ttTTTTtt |
|
D. TtTtTtTt |
|
|
|
|
|
7.If the genes for gray and tan are not linked (on separate chromosomes), and no crossing over occurs, which of the following do you figure is a possible outcome for the tan-gray cross? Let B be the black phenotype, G be the gray phenotype, T be the tan phenotype, and C the phenotype for both mutants. |
|
a. BBBBGGGG |
|
b.CCCCGGGG |
|
c.TTTTCCCC |
|
d.CCCCBBBB |
Trending now
This is a popular solution!
Step by step
Solved in 4 steps
