Year 12s: what will be the first way you research your future options? >>

OCR BIOLOGY GATEWAY B 25TH MAY 2016 B1 B2 B3 Exam

Scroll to see replies

Reply 200

U-GradeStudent

Ecological niche question?? I just wrote because they live in similar areas.. What did others get?

Reply 201

OllieBiggs

Original post by notarealname2000

The mother didn't have it so she had tt, farther was Heterozygous so he must have Tt, therefore probability 50%. Either that or I read the question wrong.

I agree!

Reply 202

ThomasRules

Original post by Dragomir_Despard

They were relevant they just required you to apply knowledge.
B1:
Drug trials
Bias caused by these

B2:
Food chains

B3:
Cloning

That was all

You missed the entire heart question in B3

Reply 203

UsKmekwioz

Unofficial mark scheme?

Reply 204

condog360

Original post by Gamer_44

Anyone get anything for the genetic crosses (punnet squares)??

Both 50% I believe. (0.5)

Reply 205

emperorzurg

Original post by UsKmekwioz

Unofficial mark scheme?

I think Naomi265 is doing one

Reply 206

ThomasRules

Original post by OllieBiggs

I agree!

As do I

Reply 207

Gamer_44

Original post by leopard923

I didn't say blind because both knew?

Posted from TSR Mobile

If they knew, then what was the point in the experiment. It was to understand how the placebo effect works so they couldn't have known.

Reply 208

AA11AAA

It was harder than 2015. So the grade boundary will be lower

Reply 209

ThomasRules

Original post by Dragomir_Despard

She didn't she ha two recessive alleles like this

She had 2 recessive alleles (tt) as she didnt have club thumbs. The father was heterozygous so had one of each (Tt). Therefore, its 50%

Reply 210

<3<3

http://www.thestudentroom.co.uk/showthread.php?t=4118415
It's completely not perfect - I can't remember it all haha

Reply 211

ThomasRules

How did everyone find that heart question? I got D, as that was the right ventricle on the left side of the page, but due to the mirror thing pumped blood around the body.

Reply 212

Chittesh14

Original post by notarealname2000

The mother didn't have it so she had tt, farther was Heterozygous so he must have Tt, therefore probability 50%. Either that or I read the question wrong.

Yeah

.

I read the bloody question wrong, ffs :/.

Reply 213

onenation

It did say in the question they were told what they'd been given, even if they were lied to

Reply 214

leopard923

Original post by Gamer_44

If they knew, then what was the point in the experiment. It was to understand how the placebo effect works so they couldn't have known.

True I get what u are saying ... However on a blind trail they would not have been told anything they would have just received a pill etc and had to go with it .

Posted from TSR Mobile

(edited 7 years ago)

Reply 215

k4mr4n7861

i thought the one about the thumbs was none because the mum and dad had normal thumbs

Reply 216

livsney

My friend got 0% for the thumb one:
She said that Tt means they are a carrier like the father, and for them to get the disease it would have to be TT.

I got 50% though!!!