ekMa a eunpntt esauqr whit a srsco fo B B+ dna B 0B; +B sersnteepr %05 cunintfo eliwh B0 essrntrpee 0% ll(nu) coitn.fun So ni tshi sc,ea eht sbadhnu udlwo eahv a B B0 enpygote ilhwe eth fewi ahs a B B+ egtone.yp
Cssor fo htese two wlil surtle ni eht fonolgiwl egynopte;s B,B 0B,B +BB, +0BB B B = 0%01 t,onfunic B+B = %57 nunc,oitf BB0 = 50% fut,onnci B+0B = 25% nfticoun
oS het wnesra will eb 1 in 4 vaeh a 25% ncniutfo niegv hte e.yepotsng
I feel like its these kinds of questions that really make a test-taker succeed. You could have studied your whole life for Step 1, and then...come up against a question like this. Its testing concepts that you're familiar with (e.g. Beta-thalassemia, genetics), but in a way that isn't something you'd ever directly learn. You have to stay calm, analyze what you know, what the question is asking, create a strategy to answer, and look at which answer is best.
I envy some of you!!
saWht hte edeceiffnr ebwente gurosezthoy“e llun oittnmau ni B glniob n”gee and huozoeeyrt“sg tmoatinu knonw ot cesau %05 acsdeeer ni B libgno egne nntcfiou fo neo ea”lll?e
I think E is also viable... 1/4 is B/B and another 1/4 is B/B+ . The B/B+ is B-thalassemia minor where B chain is underproduced (functions normally) and is usually asymptomatic, per FA (2020 pg. 418).
Also, my understanding on B-thalassemia from Dr. Sattar and first aid is that it's not set in stone that B+ is 50% production. It seems to vary.