Biology

Biology, 26.07.2019 15:30, kajtazi1157

Why do red bellied black snakes live in the easternboard of australia

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Mathematics, 26.06.2019 18:40, megancrader11

1. sam peabody is a wildlife researcher in australia. he has been studying red-bellied black snakes and tiger snakes. he randomly selected eight adults of each type of snake, measured them, and recorded their lengths in cm. red-bellied black snake: {145, 150, 150, 160, 170, 170, 170, 175} tiger snake: {120, 130, 134, 142, 146, 146, 149, 150} (a) create a line plot for each data set. (b) calculate the mean and mad for each type of snake. (round to the nearest tenth) (c) calculate the means-to-mad ratio for the two types of snakes. (d) what inference can be made about the length of both types of snakes? explain.

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Biology, 12.07.2019 13:30, haybales6019

Black-bellied seedcrackers are a species of bird found in central africa. they live in various habitats where individuals eat either hard, large seeds or small soft seeds. individuals with thick, shorter beaks can eat the harder seeds. individuals with thin, longer beaks can eat softer seeds. individuals with beaks of intermediate thickness and length cannot really eat either type of seed very well. if you measured beak width and length in populations of black-bellied seedcrackers, what type of selection would you expect to find?

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Biology, 23.10.2019 02:30, dtgwrth4150

Y-: yellow s-: star yy: black ss: starless all the sneetches want their children to have stars on their bellies. the combination of alleles that makes a black, starless sneetch is embryonic lethal. y and s are two independently assorting autosomal genes. a true breeding black star bellied sneetch mated with a true breeding yellow starless sneetch and produced 20 f1 sneetches. the f1 then mated with each other and produced 300 f2 progeny. 1. what is the f1 phenotype? 2. among 300 f2 sneetches, how many of them are black star bellied sneetches? 3. what proportion of these black star f2 would be true breeding (homozygous)? 4. among 300 f2 sneetches, how many of them are yellow star bellied sneetches? 5.what proportion of these yellow star f2 would be true breeding?

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