Questões - PUC 2017 | Gabarito e resoluções

(Pucpr 2017) Suponha a existncia de dois genes, A e B, localizados no mesmo cromossomo e com frequncia de permuta de 16%. Do cruzamento de um macho di-hbrido com gentipo cis com uma fmea aabb qual a frequncia esperada, na primeira gerao filial, de indivduos com o gentipo aabb?

(PUC - RS - 2017/2) Thrilling Discovery of Seven Earth-sized Planets Orbiting Nearby Star Ian Sample Science editor-published on Wed. 22 Feb 2017 01 A huddle of seven worlds, all close in size to Earth, 02 and perhaps warm enough for water and the life it can 03 sustain, has been spotted around a small, faint star in 04 the constellation of Aquarius. The discovery, which has 05 thrilled astronomers, has raised hopes that the hunt for 06 alien life could start much sooner than previously thought. 07 The next generation of telescopes are due to switch on in 08 the next decade. Astronomers reported what looked like 09 three planets in orbit around Trappist-1, a star they named 10 after the Trappist robotic telescope in the Chilean desert 11 that first caught sight of the alien worlds. The telescope 12 did not see the planets directly, but recorded the shadows 13 they cast as they crossed the face of the star. 14 It is the first time that so many Earth-sized planets have 15 been found in orbit around the same star, an unexpected 16 haul that suggests the Milky Way may be teeming with 17 worlds that, in size and firmness underfoot at least, 18 resemble our own rocky home. Researchers hope to 19 know if there is life on the planets within a decade. Ignas 20 Snellen, an astrophysicist at the Leiden Observatory in the 21 Netherlands, who was not involved in the study, said the 22 findings show that Earth-like planets must be extremely 23 common. This is really something new, he said. When 24 they started this search several years ago, I really thought 25 it was a waste of time.__________________________. 26 Astronomers are now focusing on whether the planets 27 have atmospheres. If they do, they could reveal the first 28 hints of life on the surfaces below. The Hubble telescope 29 could detect methane and water in the alien air, but both 30 can be produced without life. David Charbonneau, a 31 professor of astronomy at Harvard University who was 32 also not involved in the latest study, said a growing 33 number of astronomers were getting excited about what 34 he called the M-dwarf opportunity the study of planets 35 around such faint dwarf stars. Its a fast track approach 36 to looking for life beyond the solar system, he said. Adapted from https://www.theguardian.com/science/2017/feb/22/thrilling-discovery-of-seven-earth-sized-planets-discovered-orbiting-trappist-1-star The last sentence of the second paragraph was taken out of the text. The alternative below which presents the right sentence is