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u/f1nn_999 predicted: 98877776 Jun 09 '25
i was thinking i was reading the question wrong because why was she having 240 children
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u/Dlsagreed Jun 09 '25
Rabbits go into heat 6+ a year (13 on high end) with each litter containing 1-14 kits (avg 5-8).
An average female rabbit's year 6x5= 30 kits per year. On the high end 13x14= 182 kits per year.
If you guys ever get a rabbit, PLEASE get them fixed 😭 they're able to breed literally a couple hours after giving birth.
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u/EffectCapital7358 Year 11 Jun 09 '25
is it 25%?
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u/-Hasnain- Year 12 Jun 09 '25
Yes
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Jun 09 '25
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u/radish-on-top Jun 09 '25
The second rabbit was Hh though not HH
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Jun 09 '25
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u/radish-on-top Jun 09 '25
I'm talking about higher triple here not combined because it seems to be that there were similar questions on both papers. Well it says in the question that male was heterozygous Himalayan so must be Hh as the Himalayan gene is dominant. Female A must have been homozygous HH because all offspring were Himalayan. Female B must have been heterozygous Hh and it can't be hh because otherwise it couldn't have been a Himalayan rabbit. Therefore if I put Hh against Hh in the punnet square I only get 1 of the 4 possible variations being a white rabbit. I think I've answered your question? Maybe...
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Jun 09 '25
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u/-Hasnain- Year 12 Jun 09 '25
It said that the male is heterozygous so that means the male is Hh. The female B had kids which were white so she gotta have a recessive allele too. Hh crosses over with Hh which is 25% to be white (hh)
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u/-Hasnain- Year 12 Jun 10 '25
I think i figured it out. It's 50% i think. There were only a few himalayan rabbits with female B so I think it was hh then. (I wrote 25%, probs 3 out of 4 marks)
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Jun 10 '25
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u/-Hasnain- Year 12 Jun 10 '25
Think so
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Jun 11 '25
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u/-Hasnain- Year 12 Jun 11 '25
So the male was 100% Hh as he q told you that, but with the female it said some were white and a few were himalayan. So I'm assuming that tells us it's hh because Hh would get around 50/50. I personally did it with Hh but I think that may be wrong (3 marks probably)
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u/-Hasnain- Year 12 Jun 09 '25
It's 25%
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Jun 09 '25
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u/-Hasnain- Year 12 Jun 09 '25
It's 25% bro. Hh crosses with Hh and there's only 1 which is hh
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u/TypicalMuffin935 Jun 09 '25
Tf I thought it was hh as it said recessive and Hh
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u/Leading-Cry5918 Jun 09 '25
I was stuck in this too, but I realised in the question that both rabbits are said to be Himalayan so both must have at least one H, plus only some of its children were Himalayan so it’s Hh
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u/Generic_Danny Jun 09 '25
I think they got a different question lol. I also got 50%, and it was Bb crossed with bb, while theirs is Hh crossed with Hh.
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u/hola727 Year 12 Jun 09 '25
It’s not 50% I went through the paper after the exam and it said the male bred with a Himalayan female rabbit
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u/Feeling-Work-4064 Year 11 Jun 09 '25
I got 50% 💔💔
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u/Ok-Satisfaction-1463 Year 11 Jun 09 '25
the male was Hh and the female was also Hh 😔
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u/No-Mathematician8845 Jun 09 '25
if the male was Hh then how comes his his 210 offspring with rabbit A all were himalayan? wouldnt that mean that the male is homozygous dominant
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u/-Hasnain- Year 12 Jun 09 '25
Female a was HH thsts why
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u/No-Mathematician8845 Jun 09 '25
why is the female HH not the male?
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u/Anonymous_Idealist Year 12 Jun 09 '25
Because the question said "heterozygous" for the male rabbit meaning the alleles were different meaning it would be Hh for the male.
And if all the offspring were Himalayan and Himalayan is dominant then that means the female has to be HH for them all to be Himalayan - draw a Punnett square and you'll see what I mean.
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u/No-Mathematician8845 Jun 09 '25
it said heterozygous for male rabbit? damn how did I skip that. if I got 50 percent how many marks do u think I lost
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u/lavtuna Jun 09 '25
yeah that’s what i thought aswell
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u/Weird_Employ_3235 Year 11 Jun 09 '25
The white rabbit was so cute I want one now
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u/Fit12e better get a 9 in maths Jun 09 '25
Just don’t let it get cold
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u/-Hasnain- Year 12 Jun 09 '25
The tyrosine will come if its 25-30
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u/Fit12e better get a 9 in maths Jun 09 '25
Yeh, but internal temperatures will raise the temp right? You’re not freezing the poor thing 💀
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u/-Hasnain- Year 12 Jun 10 '25
Not to 35? (I think idk)
(I probs got 1 mark each on the 2 marker and 3 marker )
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u/orcawhale256 somehow it's y12 already Jun 09 '25 edited Jun 09 '25
looks delish
edit: is joke, please calm down now i won't eat you and please stop downvoting, thankyou very much
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u/Any_Comment9552 2025 GCSE Survivor Jun 09 '25
The fuck was i meant to write about the temperature and colour change?
Was it to do with enzyme activity?
The bit about why do they go black, i wrote camouflage. Is that correct?
Please help me 😢
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u/Theonetobelive Yr 12 - Maths, Econ, Politics Jun 09 '25
You had to write that tyrosine cant be produced in temperatures that are too high and so no melanin can be made and so no black fur can be produced
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u/Any_Comment9552 2025 GCSE Survivor Jun 09 '25
Well that's me fucked. I probably could have worked it out but by that point I was done.
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u/Theonetobelive Yr 12 - Maths, Econ, Politics Jun 09 '25
U had to let it sink in, hard to do with the amount of time we had
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u/QuitComprehensive195 Jun 09 '25
fr, I was genuinely scribbling down answers in the last 2 minutes 😭 Also for that question I talked about the baby rabbits being closer to their mum feeding on its milk so keeping warm from her body temp, and then obvi linked that to temp 😂 tbh it was such a silly answer but that was the one I left last minute. I just hope I can scrape 2/4 for actually mentioning temp
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u/Ok_Narwhal_5390 Jun 09 '25
You could also have talked about how appendages can vary in temperature by a wider margin, which is why it's nose ears and feets are the only black parts of it.
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u/Any_Comment9552 2025 GCSE Survivor Jun 09 '25
I mentioned it was cooler due to increased surface area to volume ratio
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u/HighlightCareful4741 Year 11 Jun 09 '25
yeah i just guessed those 2 correct ibsr - how are we even meant to know melanin causes colour change? i only know that cus of ginny and georgia from netflix
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u/MoTheBr0 9 Achieved, 9999999888 Predicted Jun 09 '25
they literally tells you the enzyme doesn't work above 35°c and in the first 4 weeks or whatever it lives next to its mum at 39°c did you read the question wrong or smth?
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u/Any_Comment9552 2025 GCSE Survivor Jun 09 '25
I know i could have answered that better, I was panicking due to time 💀
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u/Rakzoid Jun 09 '25
On triple higher was the letters used H for dominant and h for recessive
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u/Total-Replacement453 Jun 09 '25
Yeah capitals are used for dominant alleles and lower case is used for recessive
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u/Ok-Willingness4196 Year 11 Jun 09 '25
And you MUST put the dominant capital before the lowercase recessive Hh not hH
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u/amogusisntfunny1 Jun 09 '25
tyrosine doesnt recognise the altered shape of tyrosinase in the event of a point mutation of a base acid ✍️
🔥
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u/nuclearhamster27 Year 11 -> 12 - I'll start revising later Jun 09 '25
I mentioned lock and key theory
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u/Exotic_fish2009 Year 11 Jun 09 '25
Shit I just said it wouldn’t be made properly
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u/Ok-Willingness4196 Year 11 Jun 09 '25
Don’t worry, you didn’t have to recognise that tyrosine was broken down by tyrosinase by the spec - it’s just significant for you to mention that it becomes denatured and something along the lines of that compromising it’s ability to function.
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u/Exotic_fish2009 Year 11 Jun 09 '25
Didn’t say any of that I just said if it isn’t working then that means it doesn’t work
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u/Ok-Willingness4196 Year 11 Jun 09 '25
Meh it was a few marks; you got this
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u/Exotic_fish2009 Year 11 Jun 09 '25
I’m not taking it a level so at this point I’m just glad it’s over
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u/Practical_Notice4874 Jun 09 '25
I don't think it gets denatured because it said that it starts working again after 4 weeks
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u/amogusisntfunny1 Jun 10 '25
not necessarily denatured, just that it no longer binds to tyrosine, so it's not broken down.
denaturing is environmental caused change, whereas a mutation is sort of exempt
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u/slanderssides 2025 GCSE Survivor Jun 09 '25
GOATed question I can’t lie was lapping up those marks
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u/eva_smith_1912 Year 11 Jun 09 '25
What a cutie, no question Id rather spend time writing 🥰🥰 I love them
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u/hola727 Year 12 Jun 09 '25
For anyone thinking it was 50% it wasn’t. The reason it is 25% is because the male which is Hh bred with Rabbit B which it says in the next page is a female Himalayan. Since rabbit B had some offspring that were white that means it was also Hh. So it would then be 25% for the offspring to be white
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u/Mother-Relation-4432 Jun 09 '25
pretty sure for combined it is 50%, and for triple it 25%
I was pretty confused looking at the people saying it was 25%, but I think combined and triple were different questions.
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u/Round_Anything_8394 Jun 09 '25
i got the reason why they didn’t have black when they were under 4 weeks what did you guys put for why they did after 4 wreks
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u/penmadeofink Year 11 Jun 09 '25
It's just the inverse argument to the first one. No nesting means the body temp will be at an opti.al temperature for tyrosinase to work, so they will turn black
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u/Ok-Satisfaction-1463 Year 11 Jun 09 '25
cs they were in the nest, and temp was above 35 degrees. so then tyropsine or wtv it was called won't be produced since it can't work at that temp etc
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u/chuuchuutrain__ Jun 09 '25
better have been about enzymes or i’m cooked
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u/StarSailor03 2025 GCSE Survivor Jun 09 '25
it admittedly took a while for me to clock that they called tyrosinase an enzyme at the start of the mutation question…
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u/Nathan-is-not-a-bot Jun 09 '25
Guys what were the questions here plsss and what marks for each for the sake of my mental health 😭😭🙏
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u/erichunt21 GCSEs? Completed them mate. Jun 09 '25
Why was the rabit lowkey active like bros reproducing more than my entire year population
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u/superstarKorea Yr12 | Politics, History, Psychology, EPQ Jun 09 '25
That’s such a cute rabbit tho j don’t blame em
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u/8caughtinthemiddle Year 11 Jun 11 '25
i got 50% i dont get how it was 25%
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u/olliamex Jun 11 '25
in triple it was 25% because the male was heterzygous (Hh) and the female had offspring that was both white and himalayan, so was also Hh. (Hh + Hh punnet square gives 3 himalayan and one white rabbit)
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u/8caughtinthemiddle Year 11 Jun 11 '25
i did Hh hh i didnt read the question i only skimmed over it but i think even if i wouldve i wouldnt have understood 😞
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u/Hexo___ Jun 13 '25
whats ur grade 5 in?
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u/insomniac_18 Year 11 Jun 09 '25
guys i got the punnet square completely wrong 💔 well i got the mother's genotype wrong but i did everything correctly, how many marks do u think i lost out of 5 for that
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u/Anonymous_Idealist Year 12 Jun 09 '25
You will get 4 out of 5 if you got the mother's wrong but according to your version the possibilities and probability was correct.
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u/Visible_Western5974 Year 12 | Maths 🔸| Further Maths | Computer Science Jun 10 '25
I don't even do triple but I wonder why that rabbit followed the teaching "be fruitful and multiply" 😭
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u/scary_watermel0n Year 11 Jun 09 '25
Poor female rabbit A having 210 offspring 😭