Biology Paper 3 June 2009 Q:5e

[XPFMember]

Pls help for first variant Biology Paper 3 June 2009 Q:5e can someone give the answer i cant understand what the marksvheme says heres the link http://www.xtremepapers.net/CIE/Cambridge IGCSE/0610 - Biology/0610_s09_qp_3.pdf
JazakAllah

 

[MW24595]

5e) Sickle Cell Anaemia can be considered a form of discontinuous variation because the variation falls within definite groups. You either have sickle cell malaria (HsHs) or you do not (HaHa). There is nothing in between and so one cannot draw a continuum (continuous scale) for Sickle cell Anaemia. Also, Sickle Cell Anaemia is affected in no way by the external environment but by inherent genes.

That is how I would answer the question. Hope it helps.

 

[XPFMember]

if u dont mind can u pls explain a little more , i am still confused

 

[shalado95]

if u dont mind can u pls explain a little more , i am still confused

I replied to ur message!! Check it! and if u still don't get it! Lemme knw as soon as possible!