Drosophila genetic questions..please help me?
In Drosophila, long wings (lw) and hairy legs (hl) are both caused by recessive, X-linked alleles. The wild type alleles (lw+ and hl+) are responsible for normal length wings and non-hairy legs, respectively. A female homozygous for lw and hl+ is crossed to a lw+hl male. The F1 flies are interbred. The F2 males are distributed as follows: lw hl 30 lw hl+ 73 lw+ hl 70 lw+ hl+ 27 What is the map distance between lw and hl? In Drosophila, the recessive dp allele of the dumpy gene produces short, curved wings, while the recessive allele bw of the brown gene causes brown eyes. In a testcross using females heterozygous for both of these genes, the following results were obtained- Wildtype wings and wildtype eyes- 178 Wildtype wings and brown eyes- 185 Dumpy wings and wildtype eyes- 172 Dumpy wings and brown eyes- 181 In a testcross using males heterozygous for both of these genes, a different set of results were obtained- Wildtype wings and wildtype eyes- 247 Dumpy wings and brown eyes- 242 a. What can be concluded from the first testcross? b. What can be concluded from the second testcross? c. How can you reconcile the results of the two testcrosses? In a vial of Drosophila, there were female flies (but no males) with “bag” wings (they are large and fluid filled). When a bag-winged female is crossed with wild-type males, 1/3 of the offspring were bag-winged females, 1/3 were normal winged females and 1/3 were normal winged males. Explain these results.
Why does my rabbit shake all over after peeing?
lol. He's marking. If he does it when you are near him, he's marking you like he would mark a doe. Just clean yourself off, feel flattered, and move faster next time. Of course, if your lucky he's not a good aim. If he is not neutered you can get him altered and that may change his behavior after a few months but it is no garantee. If he's soaking everything though it's worth a shot (no pun intended). :)
What are some interesting facts about the Fibonacci series?
Fibonacci Day: Fibonacci Day is November 23rd, as it has the digits "1, 1, 2, 3" which is part of the sequence.Golden Ratio: When we take any two successive (one after the other) Fibonacci Numbers, their ratio is very close to the Golden Ratio "φ" which is approximately 1.618034...A: 2,3,5,8,……. 144,233,….B: 3,5,8,13……. 233,377..…B/A: 1.5,1.6666,1.6,1.625….. 1.618055556,1.618025751..Flower Petals: The number of petals in a flower consistently follows the Fibonacci sequence. Famous examples include the lily, which has three petals, buttercups, which have five, the chicory's 21, the daisy's 34, and so on. Phi appears in petals on account of the ideal packing arrangement as selected by Darwinian processes; each petal is placed at 0.618034 per turn (out of a 360° circle) allowing for the best possible exposure to sunlight and other factors.Spiral Shells/ Galaxies: This shape, a rectangle in which the ratio of the sides a/b is equal to the golden mean (phi), can result in a nesting process that can be repeated into infinity — and which takes on the form of a spiral. It's call the logarithmic spiral, and it abounds in nature.E.g. Snail shells, Milky Way Galaxy etc.Fingers: Looking at the length of our fingers, each section — from the tip of the base to the wrist — is larger than the preceding one by roughly the ratio of phi.Some other mathematical facts :The last digit of each Fibonacci number in sequence forms a 60-digit long pattern that repeats over and over again throughout the Fibonacci Sequence. A 300-digit long pattern can be found in the last two digits of each Fibonacci number in sequence. A 1,500-digit long pattern can be found in the last three digits of each Fibonacci number in sequence. A 15,000-digit long pattern in the last four digits, a 150,000-digit long pattern in the last five digits, etc.Every number is a factor of a Fibonacci number.In prime Fibonacci numbers, at least one of the prime factors of each of the numbers will never have appeared before in a previous Fibonacci number. This is known as Carmichael ‘s Theorem and has only four exceptions: F(1), F(2), F(6), and F(12).Source :15 Uncanny Examples of the Golden Ratio in NatureThe Ultimate Resource on the Fibonacci SequenceFibonacci Sequence