C. elegans' hermaphrodites have one vulva for laying eggs. Consider an Indel allele that maps to the coding sequence of a hypothetical gene called "V" (allele ID: v1). Homozygous v1 mutant animals (v1/v1) produce a completely penetrant multiple vulva mutant phenotype. Gene V is haplosufficient. Choose "True" for words that you can use to describe the v1 allele. Choose False for words you cannot use. Exactly three of the words below are true. True False
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- Termites have a haplo-diploid sex determination system where females develop from a fertilized egg (they are diploid, having one allele from the female cueen and one allele from the male), and males develop from unfertilized eggs (they are haploid, having only one allele from the queen). Assuming that the female parent (queen) is heterozygous for a particular gene, what is the probability that a female offspring will inherit the recessive allele from her mother? What is the probability that a male offspring will inherit a recessive allele from his mother? O A. The probability that a daughter will inherit a recessive allele from her mother is 50%; the probability that a son will inherit a recessive allele from his mather is 50%. OB. Ihe probobility that a daughter will inherit a recessive allele from her mother is 0%; the probability that a son will inherit a recessive allele from his mother is 100%. O C. The probability that a daughter will inherit a recessive allele from her mother is…One reason that worker bees forgo their own reproduction to help their sister (the queen) reproduce is that female bees are more closely related to their sisters than they are to their own offspring. This quirk of genetics results from the fact that bees have haplodiploid sex determination, in which females are diploid, with a mother and a father, but males are haploid, developing from unfertilized eggs. Because males are haploid, they produce sperm by mitosis. Explainwhy haplodiploid sex determination causes females to be more closely related to their sisters than to their offspring.In C. elegans there are two sexes: hermaphrodite and male. Sex is determined by the ratio of X chromosomes to haploid sets of autosomes (X/A). An X/A ratio of 1.0 produces a hermaphrodite (XX), and an X/A ratio of 0.5 results in a male (XO). In the 1970s, Jonathan Hodgkin and Sydney Brenner carried out genetic screens to identify mutations in three genes that result in either XX males (tra-1, tra-2) or XO hermaphrodites (her-1). Double-mutant strains were constructed to assess for epistatic interactions between the genes (see table). Propose a genetic model of how the her and tra genes control sex determination.
- Clownfish are protandrous hermaphrodites. Determine whether the following features are encoded by the clownfish genome or are influenced by the proteome in response to the environment. The juvenile clownfish has both male and female immature reproductive organs. Clownfish are able to produce both testosterone and 17-estradiol. Genome encoded Increased estradiol levels lead to increased levels of proteins that promote the growth of female sex organs. Increased testosterone levels lead to increased - levels of proteins that cause male sex organs to develop Proteome influencedA sexually reproducing organism has the following phenotype DdEeAaTt: The D and E loci are on the same arm of a metacentric chromosome in cis configuration. The A locus is on the long arm of an acrocentric chromosome and the T locus is on a telocentric chromosome. There are no other chromosomes. 1. What is the haploid number of this organism? 2. Using diagrams, show a cell at metaphase of mitosis and show the results of mitosis. Ensure you show the location of the gene loci on the different chromosomes.What are the molecular switches involve in sporulation? explain the switches involved not the stages. molecular switches are different from sporulation stages.
- Butterflies have an X-Y sex-determination system that is different from that of flies or humans. Female butterflies may be either XY or X0, while butterflies with two or more X chromosomes are males. This photograph shows a tiger swallowtail gynandromorph, which is half male (left side) and half female (right side). Given that the first division of the zygote divides the embryo into the future right and left halves of the butterfly, propose a hypothesis that explains how nondisjunction during the first mitosis might have produced this unusual-looking butterfly. Question is also in the picture.Lid (Little imaginal discs) is a gene located on chromosome 2L and FRT40A refers to an FRT sequence inserted at the 40A (cytological location). Tubulin (Tub) refers to a promoter that can drive target gene expression in all the cell types. Gal80 is an inhibitor of Gal4 that blocks Gal4’s ability to activate transcription. Determine whether the following statements are true or false for flies with the following genotype: y w HsFLP; lid, FRT40A / P{Tub-Gal80}, FRT40A; P{Tub-Gal4} P{UAS-GFP} / + A. The fly will express Gal4, which will activate GFP in all the somatic cells without heat shock. B. After heat shock, FLP recombinase will be induced, which will induce mitotic recombination at FRT40A. However, lid mutant clone will be not induced because it is located closer to the centromere than FRT40A. C. After heat shock, FLP recombinase will be induced, which will induce mitotic recombination at FRT40A, resulting in the generation of homozygous lid mutant clones and twin spots that are…Consider a species of wasp in which females are diploid and come from fertilized eggs, while males are haploid and come from unfertilized eggs. Assuming that a queen mates with only one male, determine the coefficient of relationship (r) for each of the following. a)A female (worker) to her sister: b)A female (worker) to her brother: c)A female (worker) to her father
- Suppose that you found a species S. ambivala that is closely related to S. latifolia, such that they share the same Y chromosome marker. However, S. ambivala is hermaphroditic. What would you expect to see on your gel, if you had taken twenty randomly chosen S. ambivala plants, and performed the same experiment?* b. Briefly explain how the use of this molecule (CA1P) disrupts both stages of photosynthesis while the Rubisco enzyme is associated with only one stage. Codule 3: The principles of heredity 1. Let's take the example of the gray kangaroo (Macropus fuliginosus) whose ploidy is 8 and the sexual determinism of this species is carried out according to the XY mode. From a male kangaroo: a) Draw the karyotype of this individual, obtained by stopping division at metaphase. Your drawing should include: a. All maternal and paternal chromosomes involved (different colors) b. An example of autosome and heterochromosome c. An example of homologous chromosome, sister chromatid and centromere. d. The total number of chromosomes in a metaphase kangaroo cell. e. A sentence to explain the difference between the terms gene and allele that might apply to this species. Page 3/4 Sh Q + 9 CA 9 0 11:57 M DELLWhen an embryo is homozygous mutant for the gap gene Kr, the fourth and fifth stripes of the pair-rule gene ftz (counting from the anterior end) do not form normally. When the gap gene kni is mutant, the fifth and sixth ftz stripes do not form normally. Explain these results in regard to how segment number is established in the embryo