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Explain natural selection - Leaving Cert Agricultural Science - Question b - 2021

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Explain natural selection. State two ways farmers can genetically improve their animal production system. 1. 2. The following are pictures of two beef cattle bre... show full transcript

Worked Solution & Example Answer:Explain natural selection - Leaving Cert Agricultural Science - Question b - 2021

Step 1

Explain natural selection.

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Answer

Natural selection is a fundamental evolutionary process where populations of living organisms adapt over time. It occurs when individuals with traits better suited to their environment tend to survive longer and reproduce more offspring. The traits that enhance survival and reproduction are passed on to the next generation, leading to gradual changes in the population.

Step 2

State two ways farmers can genetically improve their animal production system.

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Answer

  1. Using artificial insemination (AI) with proven genetic stock or performance-tested bulls.
  2. Utilizing genomic selection or DNA markers to select animals with desirable traits.

Step 3

State one physical trait, in either of the animals above, and give one reason why this trait is an advantage to beef farmers.

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Answer

Physical trait: Good conformation (double muscle gene). Reason: This trait is advantageous because it results in higher lean meat yield, leading to increased profitability for beef farmers.

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