Biology Chromosomes Question

Archive SAT Subject Test Preparation
1

<p>In fruit flies, red eyes are dominant to green
eyes. In a cross between a short-winged,
green-eyed fly and a long-winged, red-eyed
fly, the results were as follows:
40 percent short winged and red eyed
10 percent short winged and green eyed
10 percent long winged and red eyed
40 percent long winged and green eyed</p>

<p>In the above example the red-eyed, longwinged
fly had chromosomes best represented
as:</p>

<p>(A) L R
l r</p>

<p>(B) l L
R r</p>

<p>(C) L l
R r</p>

<p>(D) L R
l r</p>

<p>(E) l r
R L</p>

2

<p>I think your question isn’t formatted correctly.</p>

3

<p>I tried to line the choices up properly, but it’s not working. The order of the individual alleles, which is what matters, is preserved though.</p>

4

<p>Then it’s (C) L l x R r</p>

5

<p>Yeah, that’s what I thought. The answer given, however, is B…</p>

6

<p>Where did you get the question from?</p>

7

<p>Peterson’s SAT II Success Biology E/M. Maybe it’s not the best resource? xD</p>