Consider the following hypothetical scenario involving giraffes. A population of giraffes is composed of individuals of varying neck lengths, i.e., some giraffes have long necks, others have short necks, and some are in-between. Neck length in giraffes is a heritable trait, i.e., offspring have necks similar to their parents due to them inheriting genes from their parents. Within this population, there is competition for resources (leaves to eat). Long-necked giraffes are able to consume more leaves than short or medium-necked giraffes because they can reach leaves that are higher up in the canopy. Therefore, long-necked giraffes, in the current generation, have begun to survive and reproduce more often than giraffes with short or medium necks. https://www.globalchange.umich.edu/globalchange1/current/lectures/selection/selection.html (you can also search “natural selection Michigan” to find this helpful website) If you read between the lines…the above paragraph tells you some of the general characteristics or observations that underlie the process of natural selection. For example, “organisms exhibit variation in traits that can be passed on to the next generation, i.e., heritable variation”. There are two more characteristics that you can describe. Describe them.

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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Consider the following hypothetical scenario involving giraffes. A population of giraffes is composed of individuals of varying neck lengths, i.e., some giraffes have long necks, others have short necks, and some are in-between. Neck length in giraffes is a heritable trait, i.e., offspring have necks similar to their parents due to them inheriting genes from their parents. Within this population, there is competition for resources (leaves to eat). Long-necked giraffes are able to consume more leaves than short or medium-necked giraffes because they can reach leaves that are higher up in the canopy. Therefore, long-necked giraffes, in the current generation, have begun to survive and reproduce more often than giraffes with short or medium necks. https://www.globalchange.umich.edu/globalchange1/current/lectures/selection/selection.html (you can also search “natural selection Michigan” to find this helpful website) If you read between the lines…the above paragraph tells you some of the general characteristics or observations that underlie the process of natural selection. For example, “organisms exhibit variation in traits that can be passed on to the next generation, i.e., heritable variation”. There are two more characteristics that you can describe. Describe them.

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