# Leaving Cert Ag Science: Genetics & Breeding questions > Every Leaving Cert Ag Science exam question on Genetics & Breeding, grouped by level and year. Questions come from the official State Examinations Commission papers; every PDF link opens the original on examinations.ie. Canonical: https://examai.ie/past-papers/leaving-cert/ag-science/topic/genetics-breeding Inheritance and crosses, selection and breeding indices, and the reproductive technologies used on farms. 63 past Ag Science questions on this topic, spanning 2015 to 2026, grouped by year. Each links to its exact page in the official paper and marking scheme. ## Higher Level ### 2026 - Q8 (10 marks): cattle breeds - [Paper](https://www.examinations.ie/archive/exampapers/2026/LC024ALP000EV.pdf#page=13) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2026/LC024ALP000EV.pdf#page=17) - Q12 (10 marks): pig production - [Paper](https://www.examinations.ie/archive/exampapers/2026/LC024ALP000EV.pdf#page=18) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2026/LC024ALP000EV.pdf#page=20) - Q15 (50 marks): farm technology - [Paper](https://www.examinations.ie/archive/exampapers/2026/LC024ALP000EV.pdf#page=28) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2026/LC024ALP000EV.pdf#page=25) - Q18 (50 marks): performance testing, plant breeding, milk quality - [Paper](https://www.examinations.ie/archive/exampapers/2026/LC024ALP000EV.pdf#page=38) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2026/LC024ALP000EV.pdf#page=29) ### 2025 - Q1 (10 marks): cattle breeds, animal production - [Paper](https://www.examinations.ie/archive/exampapers/2025/LC024ALP000EV.pdf#page=3) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2025/LC024ALP000EV.pdf#page=12) - Q10 (10 marks): sheep production, farm technology - [Paper](https://www.examinations.ie/archive/exampapers/2025/LC024ALP000EV.pdf#page=16) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2025/LC024ALP000EV.pdf#page=16) - Q12 (10 marks): water quality, photosynthesis, transpiration - [Paper](https://www.examinations.ie/archive/exampapers/2025/LC024ALP000EV.pdf#page=18) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2025/LC024ALP000EV.pdf#page=17) - Q13 (50 marks): dairy production, milk recording, calculations - [Paper](https://www.examinations.ie/archive/exampapers/2025/LC024ALP000EV.pdf#page=21) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2025/LC024ALP000EV.pdf#page=18) - Q15 (50 marks): plant breeding, weed control, plant identification - [Paper](https://www.examinations.ie/archive/exampapers/2025/LC024ALP000EV.pdf#page=28) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2025/LC024ALP000EV.pdf#page=20) - Q17 (50 marks): sheep production, animal housing, graph plotting - [Paper](https://www.examinations.ie/archive/exampapers/2025/LC024ALP000EV.pdf#page=35) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2025/LC024ALP000EV.pdf#page=23) ### 2024 - Q2 (10 marks): animal breeds, sustainability - [Paper](https://www.examinations.ie/archive/exampapers/2024/LC024ALP000EV.pdf#page=4) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2024/LC024ALP000EV.pdf#page=12) - Q11 (10 marks): culling - [Paper](https://www.examinations.ie/archive/exampapers/2024/LC024ALP000EV.pdf#page=16) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2024/LC024ALP000EV.pdf#page=17) - Q18 (50 marks): integrated pest management - [Paper](https://www.examinations.ie/archive/exampapers/2024/LC024ALP000EV.pdf#page=37) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2024/LC024ALP000EV.pdf#page=25) ### 2023 - Q1 (10 marks): animal breeds, cattle - [Paper](https://www.examinations.ie/archive/exampapers/2023/LC024ALP000EV.pdf#page=3) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2023/LC024ALP000EV.pdf#page=12) - Q4 (10 marks): performance testing, beef - [Paper](https://www.examinations.ie/archive/exampapers/2023/LC024ALP000EV.pdf#page=7) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2023/LC024ALP000EV.pdf#page=13) - Q7 (10 marks): dairy, sustainability - [Paper](https://www.examinations.ie/archive/exampapers/2023/LC024ALP000EV.pdf#page=10) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2023/LC024ALP000EV.pdf#page=15) - Q9 (10 marks): agricultural technology, gps - [Paper](https://www.examinations.ie/archive/exampapers/2023/LC024ALP000EV.pdf#page=12) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2023/LC024ALP000EV.pdf#page=17) - Q11 (10 marks): suckler beef, key performance indicators - [Paper](https://www.examinations.ie/archive/exampapers/2023/LC024ALP000EV.pdf#page=16) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2023/LC024ALP000EV.pdf#page=19) ### 2022 - Q2 (10 marks): animal breeds - [Paper](https://www.examinations.ie/archive/exampapers/2022/LC024ALP000EV.pdf#page=5) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2022/LC024ALP000EV.pdf#page=13) - Q15 (50 marks): agricultural technology, animal housing - [Paper](https://www.examinations.ie/archive/exampapers/2022/LC024ALP000EV.pdf#page=27) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2022/LC024ALP000EV.pdf#page=27) - Q17 (50 marks): soil biology, earthworms, plant breeding - [Paper](https://www.examinations.ie/archive/exampapers/2022/LC024ALP000EV.pdf#page=33) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2022/LC024ALP000EV.pdf#page=30) ### 2021 - Q9 (10 marks): antibiotic resistance - [Paper](https://www.examinations.ie/archive/exampapers/2021/LC024ALP000EV.pdf#page=14) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2021/LC024ALP000EV.pdf#page=17) - Q11 (10 marks): digestive system, animal disorders - [Paper](https://www.examinations.ie/archive/exampapers/2021/LC024ALP000EV.pdf#page=16) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2021/LC024ALP000EV.pdf#page=18) - Q14 (50 marks): animal production systems, animal welfare, animal health - [Paper](https://www.examinations.ie/archive/exampapers/2021/LC024ALP000EV.pdf#page=26) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2021/LC024ALP000EV.pdf#page=22) - Q18 (50 marks): crop productivity, sustainable intensification, lactation - [Paper](https://www.examinations.ie/archive/exampapers/2021/LC024ALP000EV.pdf#page=44) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2021/LC024ALP000EV.pdf#page=35) ### 2020 - Q5 (48 marks): dairy production, milk quality - [Paper](https://www.examinations.ie/archive/exampapers/2020/LC024ALP000EV.pdf#page=5) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2020/LC024ALP000EV.pdf#page=8) - Q7 (48 marks) - [Paper](https://www.examinations.ie/archive/exampapers/2020/LC024ALP000EV.pdf#page=6) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2020/LC024ALP000EV.pdf#page=10) ### 2019 - Q7 (48 marks): sheep production - [Paper](https://www.examinations.ie/archive/exampapers/2019/LC024ALP000EV.pdf#page=6) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2019/LC024ALP000EV.pdf#page=12) - Q9 (48 marks): grass digestibility, dairy herd management, hedgerows - [Paper](https://www.examinations.ie/archive/exampapers/2019/LC024ALP000EV.pdf#page=7) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2019/LC024ALP000EV.pdf#page=14) ### 2018 - Q7 (48 marks): micropropagation - [Paper](https://www.examinations.ie/archive/exampapers/2018/LC024ALP000EV.pdf#page=6) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2018/LC024ALP000EV.pdf#page=12) ### 2017 - Q5 (48 marks): milk, sheep production, beef production - [Paper](https://www.examinations.ie/archive/exampapers/2017/LC024ALP000EV.pdf#page=4) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2017/LC024ALP000EV.pdf#page=12) - Q7 (48 marks): suckler beef - [Paper](https://www.examinations.ie/archive/exampapers/2017/LC024ALP000EV.pdf#page=5) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2017/LC024ALP000EV.pdf#page=14) ### 2016 - Q5 (48 marks): dairy production, milk composition - [Paper](https://www.examinations.ie/archive/exampapers/2016/LC024ALP000EV.pdf#page=4) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2016/LC024ALP000EV.pdf#page=8) - Q7 (48 marks) - [Paper](https://www.examinations.ie/archive/exampapers/2016/LC024ALP000EV.pdf#page=5) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2016/LC024ALP000EV.pdf#page=9) ### 2015 - Q5 (48 marks): sheep production, animal physiology - [Paper](https://www.examinations.ie/archive/exampapers/2015/LC024ALP000EV.pdf#page=4) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2015/LC024ALP000EV.pdf#page=9) - Q7 (48 marks): dairy enterprise - [Paper](https://www.examinations.ie/archive/exampapers/2015/LC024ALP000EV.pdf#page=4) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2015/LC024ALP000EV.pdf#page=10) ## Ordinary Level ### 2026 - Q5 (10 marks): cattle breeds - [Paper](https://www.examinations.ie/archive/exampapers/2026/LC024GLP000EV.pdf#page=7) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2026/LC024GLP000EV.pdf#page=13) - Q7 (10 marks): dairy cattle - [Paper](https://www.examinations.ie/archive/exampapers/2026/LC024GLP000EV.pdf#page=8) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2026/LC024GLP000EV.pdf#page=14) - Q9 (10 marks): farm safety, biosecurity, health and safety - [Paper](https://www.examinations.ie/archive/exampapers/2026/LC024GLP000EV.pdf#page=10) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2026/LC024GLP000EV.pdf#page=15) ### 2025 - Q9 (10 marks): animal husbandry, farm economics - [Paper](https://www.examinations.ie/archive/exampapers/2025/LC024GLP000EV.pdf#page=10) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2025/LC024GLP000EV.pdf#page=14) - Q10 (10 marks) - [Paper](https://www.examinations.ie/archive/exampapers/2025/LC024GLP000EV.pdf#page=12) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2025/LC024GLP000EV.pdf#page=15) - Q18 (50 marks): suckler beef, body condition score, dairy exports - [Paper](https://www.examinations.ie/archive/exampapers/2025/LC024GLP000EV.pdf#page=34) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2025/LC024GLP000EV.pdf#page=23) ### 2024 - Q11 (10 marks): cattle breeds, poultry - [Paper](https://www.examinations.ie/archive/exampapers/2024/LC024GLP000EV.pdf#page=14) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2024/LC024GLP000EV.pdf#page=16) - Q15 (50 marks): flock management - [Paper](https://www.examinations.ie/archive/exampapers/2024/LC024GLP000EV.pdf#page=25) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2024/LC024GLP000EV.pdf#page=20) - Q17 (50 marks): crop production, pest management - [Paper](https://www.examinations.ie/archive/exampapers/2024/LC024GLP000EV.pdf#page=31) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2024/LC024GLP000EV.pdf#page=22) - Q18 (50 marks): dairy management, cattle breeds - [Paper](https://www.examinations.ie/archive/exampapers/2024/LC024GLP000EV.pdf#page=34) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2024/LC024GLP000EV.pdf#page=24) ### 2023 - Q10 (10 marks): beef production - [Paper](https://www.examinations.ie/archive/exampapers/2023/LC024GLP000EV.pdf#page=14) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2023/LC024GLP000EV.pdf#page=15) - Q18 (50 marks) - [Paper](https://www.examinations.ie/archive/exampapers/2023/LC024GLP000EV.pdf#page=34) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2023/LC024GLP000EV.pdf#page=24) ### 2022 - Q2 (10 marks): animal breeds - [Paper](https://www.examinations.ie/archive/exampapers/2022/LC024GLP000EV.pdf#page=4) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2022/LC024GLP000EV.pdf#page=12) - Q4 (10 marks): organic farming, biodiversity - [Paper](https://www.examinations.ie/archive/exampapers/2022/LC024GLP000EV.pdf#page=7) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2022/LC024GLP000EV.pdf#page=13) - Q18 (50 marks): grass varieties, reseeding, data analysis - [Paper](https://www.examinations.ie/archive/exampapers/2022/LC024GLP000EV.pdf#page=35) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2022/LC024GLP000EV.pdf#page=26) ### 2021 - Q7 (10 marks): data analysis, agricultural policy - [Paper](https://www.examinations.ie/archive/exampapers/2021/LC024GLP000EV.pdf#page=9) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2021/LC024GLP000EV.pdf#page=13) - Q10 (10 marks): cattle - [Paper](https://www.examinations.ie/archive/exampapers/2021/LC024GLP000EV.pdf#page=13) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2021/LC024GLP000EV.pdf#page=14) - Q12 (10 marks): cattle breeds, sheep breeds - [Paper](https://www.examinations.ie/archive/exampapers/2021/LC024GLP000EV.pdf#page=16) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2021/LC024GLP000EV.pdf#page=16) - Q18 (50 marks): crop production, liveweight gain - [Paper](https://www.examinations.ie/archive/exampapers/2021/LC024GLP000EV.pdf#page=33) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2021/LC024GLP000EV.pdf#page=23) ### 2020 - Q2 (20 marks): colostrum - [Paper](https://www.examinations.ie/archive/exampapers/2020/LC024GLP000EV.pdf#page=3) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2020/LC024GLP000EV.pdf#page=4) - Q10 (60 marks) - [Paper](https://www.examinations.ie/archive/exampapers/2020/LC024GLP000EV.pdf#page=9) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2020/LC024GLP000EV.pdf#page=11) ### 2019 - Q10 (60 marks) - [Paper](https://www.examinations.ie/archive/exampapers/2019/LC024GLP000EV.pdf#page=10) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2019/LC024GLP000EV.pdf#page=10) ### 2018 - Q2 (20 marks): animal production, pigs, sheep - [Paper](https://www.examinations.ie/archive/exampapers/2018/LC024GLP000EV.pdf#page=3) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2018/LC024GLP000EV.pdf#page=5) - Q10 (60 marks) - [Paper](https://www.examinations.ie/archive/exampapers/2018/LC024GLP000EV.pdf#page=9) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2018/LC024GLP000EV.pdf#page=10) ### 2017 - Q9 (60 marks) - [Paper](https://www.examinations.ie/archive/exampapers/2017/LC024GLP000EV.pdf#page=10) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2017/LC024GLP000EV.pdf#page=9) ### 2016 - Q12 (60 marks) - [Paper](https://www.examinations.ie/archive/exampapers/2016/LC024GLP000EV.pdf#page=12) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2016/LC024GLP000EV.pdf#page=13) ### 2015 - Q12 (60 marks): cell structure - [Paper](https://www.examinations.ie/archive/exampapers/2015/LC024GLP000EV.pdf#page=11) · [Marking scheme](https://www.examinations.ie/archive/markingschemes/2015/LC024GLP000EV.pdf#page=12) ## Related - [Scientific Practices & Investigation](https://examai.ie/past-papers/leaving-cert/ag-science/topic/scientific-practices-investigation) - [Soils](https://examai.ie/past-papers/leaving-cert/ag-science/topic/soils) - [Crops & Plant Science](https://examai.ie/past-papers/leaving-cert/ag-science/topic/crops-plant-science) - [Grassland & Forage](https://examai.ie/past-papers/leaving-cert/ag-science/topic/grassland-forage) - [Animal Production & Husbandry](https://examai.ie/past-papers/leaving-cert/ag-science/topic/animal-production-husbandry) - [Animal Health & Disease](https://examai.ie/past-papers/leaving-cert/ag-science/topic/animal-health-disease) - [Sustainability & Environment](https://examai.ie/past-papers/leaving-cert/ag-science/topic/sustainability-environment) - [Farm Management, Machinery & Safety](https://examai.ie/past-papers/leaving-cert/ag-science/topic/farm-management-machinery-safety) - [All Ag Science past papers](https://examai.ie/past-papers/leaving-cert/ag-science)