Which of the following is correct regarding the process of...

Name: Problem 3, Chapter 23: Human Biology
Uploaded: 2021-03-22T18:37:19-08:00
Duration: 3 min 58 s
Channel: Danielle Ashley
Description: Which of the following is correct regarding the process of evolutionary change? a. An adapted individual is the one that survives and passes on its genes to offspring. b. Changes in phenotype are passed on by way of the genotype to the next generation. c. Organisms are able to bring about a change in their phenotype. d. Evolution is striving toward particular traits. e. All of these are correct.

Which of the following is correct regarding the process of evolutionary change? a. An adapted individual is the one that survives and passes on its genes to offspring. b. Changes in phenotype are passed on by way of the genotype to the next generation. c. Organisms are able to bring about a change in their phenotype. d. Evolution is striving toward particular traits. e. All of these are correct.

Which of the following is correct regarding the process of evolutionary change?
a. An adapted individual is the one that survives and passes on its genes to offspring.
b. Changes in phenotype are passed on by way of the genotype to the next generation.
c. Organisms are able to bring about a change in their phenotype.
d. Evolution is striving toward particular traits.
e. All of these are correct.

Key Concepts

Natural Selection

Natural selection is the mechanism by which individuals with traits that are better suited to their environment tend to survive and reproduce at higher rates than others. It refers to the differential survival and reproduction due to variations in heritable traits, which over time leads to changes in the genetic makeup of the population.

Genotype-Phenotype Relationship

This concept differentiates between the genotype, which is the genetic code inherited from the parents, and the phenotype, which is the observable characteristics of an organism. It underlines that evolutionary change is mediated by changes in the genotype that manifest as variations in the phenotype, rather than changes acquired during an individual’s lifetime.

Non-Teleological Nature of Evolution

Evolution is a process that does not have a predetermined direction or specific goal. It works through random genetic variations and environmental pressures, rather than striving toward the achievement of particular traits or an ideal form.

Misconceptions of Inheritance

There is a common misunderstanding that organisms can directly change their phenotype to adapt to their environment and then pass these changes on to their offspring, a view reminiscent of Lamarckian inheritance. Modern evolutionary biology clarifies that only genetic variations and mutations that are heritable can contribute to evolutionary change.

Transcript

0:00 Hello, students.

00:01 Today, we're going to be answering this question in regards to a chapter on human evolution.

00:06 So the question reads, which one of these statements is the correct example of the process of evolutionary change? is it an adapted individual is the one that survives and passes on its genes to offspring? is it changes in phenotype are passed on by way of genotype to the next generation.

00:35 Is it organisms are able to bring about a change to their phenotype or evolution is striving towards particular traits or all of these are correct? you can pause a video and pick which ones you believe is the which one that you believe is the correct answer and we'll go over it shortly.

01:00 Okay, so reading into it, we can see with evolutionary change that evolution is defined as the change in the inherited traits of a population of an organism through success genet, through successive genetic.

01:21 And when living organisms reproduce, they pass on their progeny a collection of traits.

01:34 So hearing this, it sounds like it could be all of the above, but for evolutionary change.

01:40 An example, they can bring up one example.

01:45 It's not in the book, but well, i can bring up another sample.

01:49 We can show two examples.

01:51 Okay.

01:52 One example is where over many generations, ostrichs and emus evolved to have larger bodies and feet made for running on land, which left them without the ability or the need to fly.

02:11 And they bring up like another example that they love to bring up about is the giraffe, how the giraffe's neck gets got longer because, they try to reach for the trees to eat the leaves...

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