Which example best describes the influence of genetic factors?

A shrub with good access to sunlight is taller than other shrubs located in shaded areas.
The adult offspring of a pair of deer is shorter than its parents and obtained fewer nutrients when it was younger.
A corn plant is the same heights as another corn plant of a different variety.
A horse is the same size as its parents and similar height to other horses of the same breed that it lives with on a farm.

The example of a horse being the same size as its parents and similar height to other horses of the same breed on a farm best describes the influence of genetic factors. In this case, the genetic makeup of the horse determines its size and height, which is consistent with its parents and the other horses of the same breed.

The example that best describes the influence of genetic factors is the horse being the same size as its parents and having a similar height to other horses of the same breed that it lives with on a farm. This example suggests that the horse's size and height are determined by its genetic makeup, as it has inherited these traits from its parents. Genetic factors play a significant role in determining an individual's characteristics and traits, including physical attributes like size and height.

The example that best describes the influence of genetic factors is the last one: "A horse is the same size as its parents and similar height to other horses of the same breed that it lives with on a farm."

To understand why this example best represents genetic influence, we need to consider the role of genetics in determining physical characteristics. Genetic factors are inherited traits passed down from parents to offspring. They play a significant role in determining various aspects of an organism's physical appearance, including its size, height, and other observable traits.

In the case of the horse example, when a horse is the same size as its parents and similar in height to other horses of the same breed, it indicates that genetic factors are responsible for these characteristics. Horses of the same breed typically share common genetic traits, which lead to similarities in physical characteristics among individuals of that breed. These traits are passed down from parent horses to their offspring through genetic inheritance.

To determine the influence of genetic factors in other examples, we need to consider alternative explanations. In the first example, the difference in height between shrubs could be due to the varying amount of sunlight they receive, rather than genetic factors. The second example suggests that the shorter adult offspring could have experienced a lack of nutrients during its developmental stage, which can affect growth but may not necessarily be a result of genetics. The third example, where two corn plants of different varieties have the same height, could be a result of environmental factors or similarities in their growth conditions rather than genetic factors.

So, considering all the examples, the one where a horse is the same size as its parents and similar in height to other horses of the same breed best demonstrates the influence of genetic factors.