About This Chapter
TASC Science: Variation of Traits - Chapter Summary
Let our chapter materials help you think back to your courses about genetics and trait variation as you prepare for the TASC Science assessment. After you watch each of the video lessons and read through the transcripts, you should be more comfortable answering questions about the following topics:
- Mutagens and DNA damage
- Random mutation
- RNA translation and the genetic code
- The relationship between the environment and mutation rates
While brushing up on information about genetic variation, you can gauge how much you remember about this topic by answering the questions on the lesson quizzes. Your scores on these quizzes may help you determine how much you do or don't remember about this specific topic. Of course, if you already know you need to go back over this material, you can simply watch each lesson within the chapter. We make our lessons short so that you remain fully engaged as well as to fit your busy schedule. Remember that as you get ready for the TASC Science assessment that you can take our study materials anywhere you go, since our site is mobile friendly.
TASC Science: Variation of Traits Objectives
The TASC Science assessment determines whether someone has gained a full scope of scientific knowledge across all the major subcategories. However, there are stipulations about who can take this test, since the test is designed as a high school equivalency test for people who have not graduated from high school and who are not currently enrolled.
The designers of the tests have taken into account the Next Generation Science Standards (NGSS), and thus the questions use a multidisciplinary style approach, combining science with related disciplines, such as engineering. Under this multidisciplinary structure, you will be asked questions within three main areas, including space and Earth sciences, life sciences, and physical sciences. Your knowledge about the variation of traits may be addressed in questions within the life sciences area, and this content area makes up about 36% of the test.
1. What Is the Genetic Code That Translates RNA Into Amino Acids?
How is RNA translated into a series of amino acids? Learn the language of the genetic code, explore a codon dictionary, and discover some basics of genetics in this lesson on translation.
2. Meiosis: Comparison to Mitosis, Crossing Over & Process
Welcome to meiosis, a realm of division doubled for reproduction untroubled. You'll get a preview of both divisions of meiosis and see what it takes to go from a diploid cell to a haploid gamete.
3. Genetic Variability and Random Mutation
Evolution is driven by variation among populations. The amount of variability determines how well a population can adapt to environmental changes, while random mutations can provide new variations that help a population adapt to unexpected changes.
4. Mutagens: How the Environment Affects Mutation Rates
What causes mutations to occur in living things? How do we avoid mutations? Are mutations always bad? Discover answers to these questions and more in this lesson on mutagens.
5. Causes of Mutation and DNA Damage- Mutagens
Mutations, or changes in DNA sequences, are incredibly important in biology, from evolution and diversity to cancer and genetic diseases. But how do mutations happen? In this lesson, you'll learn about mutagens, which are chemicals that can cause mutations.
Earning College Credit
Did you know… We have over 200 college courses that prepare you to earn credit by exam that is accepted by over 1,500 colleges and universities. You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam regardless of age or education level.
To learn more, visit our Earning Credit Page
Transferring credit to the school of your choice
Not sure what college you want to attend yet? Study.com has thousands of articles about every imaginable degree, area of study and career path that can help you find the school that's right for you.
Other chapters within the TASC Science: Prep and Practice course
- TASC Science: Structure & Function of Living Things
- TASC Science: Growth & Development of Organisms
- TASC Science: Matter & Energy Flow in Organisms
- TASC Science: Interdependence in Ecosystems
- TASC Science: Cycles of Matter & Energy Transfer in Ecosystems
- TASC Science: Ecosystem Dynamics, Functioning & Resilience
- TASC Science: Social Interactions & Group Behavior
- TASC Science: Biodiversity & Humans
- TASC Science: Developing Environmental Solutions
- TASC Science: Gene Inheritance
- TASC Science: Evidence of Common Ancestry & Diversity
- TASC Science: Natural Selection & Adaptation
- TASC Science: The Universe & Its Stars
- TASC Science: Earth & the Solar System
- TASC Science: Earth's Formation & Plate Tectonics
- TASC Science: Radiometric Dating
- TASC Science: Earth Materials & Systems
- TASC Science: Water & Earth's Surface Processes
- TASC Science: Weather & Climate
- TASC Science: Natural Resources
- TASC Science: Natural Hazards
- TASC Science: Human Impacts on Earth Systems
- TASC Science: Structure & Properties of Matter
- TASC Science: Chemical Reactions
- TASC Science: Nuclear Processes
- TASC Science: Forces & Motion
- TASC Science: Types of Interactions
- TASC Science: Types of Energy
- TASC Science: Conservation of Energy & Energy Transfer
- TASC Science: Wave Properties
- TASC Science: Electromagnetic Radiation
- TASC Science: Information Technologies & Instrumentation
- TASC Science Flashcards