The newest 8 of 8 written questions. Open one to see it on the real paper.
The farmer decides to breed a new type of chicken. This new type of chicken will produce: * —ahigher number of eggs per month * eggs with a higher mass. Describe how to use selective breeding to produce this new type of chicken. Identify the two types of chicken from Table 3.1 the farmer should use. types of chicken fr...
See it on the paper →State the name of the type of selection the farmer could use to improve the quality of crop plants.
See it on the paper →State two ways that artificial selection is different from natural selection.
See it on the paper →Complete the sentences to describe the method the farmer uses to increase the number of smaller ponies on the farm. The farmer selects the ponies with the desirable feature. These ponies are then . The offspring are then selected and used for . This process is then over many generations.
See it on the paper →State the name of the process the farmer uses.
See it on the paper →Name the type of breeding cross 1 represents.
See it on the paper →Corn snakes are a type of snake often kept as pets. Selective breeding has resulted in bright red-coloured corn snakes. The sentences below describe the process of selective breeding of bright red corn snakes. The sentences are not in the correct order. Use numbers 1–5 to show the correct order. The third sentence has...
Only a small number of candidates were able to state two differences between artificial and natural selection however some candidates were awarded one mark for one correct difference. The most common difference given related to the time for artificial selection being shorter than natural selection. Very few candidates identified that artificial selection requires humans to select the desired trait...
— Examiner report, October/November 2021, 0654/43 Q4(d) (Cambridge)
There was a wide range of marks on this question. All four words were known to some candidates but the least known idea was that it is the smaller offspring that are selected.
— Examiner report, February/March 2021, 0654/32 Q10(a)(ii) (Cambridge)
Candidates found it very challenging to interpret a normal distribution curve when it was used to choose the cows going forward in a breeding programme. Very few correctly selected those animals with the highest milk yield.
— Examiner report, October/November 2019, 0654/11 Q11 (Cambridge)
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Which group of cows should be used in a programme to breed more cows with the highest milk yield?
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