Genetics Flashcards

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson
Download our mobile app to listen on the go
Get App

Questions and Answers

What is heredity?

  • The study of DNA
  • The passing of physical characteristics from parent to offspring (correct)
  • The dominance of traits
  • The genetic makeup of an organism

What is genetics?

The scientific study of how physical characteristics are passed from parent to offspring through DNA.

What is a trait?

Inherited characteristic of an organism

What is a gene?

<p>A sequence of DNA that controls a trait.</p> Signup and view all the answers

What are alleles?

<p>Different forms of a gene.</p> Signup and view all the answers

A dominant trait is always hidden when it is present.

<p>False (B)</p> Signup and view all the answers

A recessive trait is visible when the dominant gene is present.

<p>False (B)</p> Signup and view all the answers

What is a phenotype?

<p>An organism's physical appearance, or visible trait.</p> Signup and view all the answers

What is a genotype?

<p>An organism's genetic makeup, or allele combinations.</p> Signup and view all the answers

Homozygous means having two identical alleles for a trait.

<p>True (A)</p> Signup and view all the answers

Heterozygous means having two identical alleles for a trait.

<p>False (B)</p> Signup and view all the answers

What is a purebred?

<p>The offspring of generations that have the same traits.</p> Signup and view all the answers

What is a hybrid?

<p>An organism that has two different alleles for a trait.</p> Signup and view all the answers

What is a Punnett square?

<p>A tool used to predict the results of a genetic cross.</p> Signup and view all the answers

What is probability in genetics?

<p>A number that describes how likely it is that an event will occur.</p> Signup and view all the answers

Flashcards are hidden until you start studying

Study Notes

Heredity and Genetics

  • Heredity refers to the transmission of physical characteristics from parents to their offspring.
  • Genetics is the scientific discipline that explores how these characteristics are inherited through DNA.

Key Terminology

  • Trait: An inherited characteristic specific to an organism.
  • Gene: A DNA sequence responsible for controlling a specific trait.
  • Alleles: Variants of a gene that can result in different traits.

Dominance and Recessiveness

  • Dominant Trait: A trait that is expressed in the phenotype whenever present.
  • Recessive Trait: A trait that remains concealed in the presence of a dominant allele.

Genetic Makeup

  • Phenotype: The observable physical characteristics of an organism, stemming from its genotype.
  • Genotype: The genetic composition or combination of alleles in an organism.

Genetic Combinations

  • Homozygous: An individual with identical alleles for a given trait.
  • Heterozygous: An individual possessing two different alleles for a specific trait.

Breeding Types

  • Purebred: Offspring that result from generations of organisms with the same traits.
  • Hybrid: An organism with two distinct alleles for a given trait.

Genetic Predictive Tools

  • Punnett Square: A graphical method used to anticipate the outcomes of genetic crosses.

Statistical Concepts

  • Probability: A quantified measure indicating the likelihood of an event occurring, often applied in genetics to predict trait inheritance.

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Quiz Team

More Like This

Use Quizgecko on...
Browser
Open
Browser
Browser