To select and retain the desirable trait of large body size which a farmer has observed in his herd, the farmer needs to

Daniie

2 years ago

I was almost misled by your answer,The answer to this question is actually option C.
Inbreeding the animals in his herd involves mating closely related individuals to maintain the desirable traits.
crossbreeding the animals with a different herd may introduce new genes and traits into the herd which may not necessarily be compatible with the current herd
Thank you

Kevin_Aro

3 years ago

B. cross-breed his animals with a different herd.

This is because a desirable trait such as large body size can be retained and improved upon by cross-breeding with animals from other herds that also possess the same trait. This helps to increase the genetic diversity of the herd, which in turn improves the overall health and productivity of the animals. Inbreeding can lead to genetic abnormalities and reduced fitness, so it is not a recommended method for retaining desirable traits in a herd. Feeding the animals with more food or preventing diseases in the herd can also improve their health and productivity, but it is unlikely to result in a significant increase in body size over the long term.