Podcast
Questions and Answers
What does DNA stand for?
What does DNA stand for?
- Deoxyribonutric acid
- Deoxyribonucleic acid (correct)
- Deoxyribonuclear acid
- Dioxyribonucleic acid
Which of the following pairs of DNA bases are correctly matched?
Which of the following pairs of DNA bases are correctly matched?
- Cytosine (C) with Thymine (T)
- Thymine (T) with Guanine (G)
- Adenine (A) with Thymine (T) (correct)
- Adenine (A) with Cytosine (C)
What does it mean when traits are described as homozygous?
What does it mean when traits are described as homozygous?
- Having one dominant and one recessive allele
- Having two identical alleles for a trait (correct)
- Being unable to express certain traits
- Having two different alleles for a trait
How are male and female individuals represented in pedigree charts?
How are male and female individuals represented in pedigree charts?
What is a key characteristic of identical twins?
What is a key characteristic of identical twins?
What distinguishes a heterozygous genotype from a homozygous genotype?
What distinguishes a heterozygous genotype from a homozygous genotype?
How do dominant traits influence trait expression in offspring?
How do dominant traits influence trait expression in offspring?
What is indicated by a pedigree chart showing a filled circle?
What is indicated by a pedigree chart showing a filled circle?
Which statement is correct regarding mutations?
Which statement is correct regarding mutations?
What role did Gregor Mendel play in the field of genetics?
What role did Gregor Mendel play in the field of genetics?
Flashcards
DNA Structure
DNA Structure
DNA has a double helix shape; it's the blueprint for all living things.
Matching DNA Bases
Matching DNA Bases
Adenine (A) pairs with Thymine (T), and Cytosine (C) pairs with Guanine (G).
Dominant Trait
Dominant Trait
A trait expressed in offspring if at least one parent has it.
Homozygous
Homozygous
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Gregor Mendel
Gregor Mendel
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DNA's shape
DNA's shape
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Matching DNA bases
Matching DNA bases
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Dominant trait
Dominant trait
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Homozygous
Homozygous
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Gregor Mendel
Gregor Mendel
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Study Notes
DNA Structure and Function
- DNA is the blueprint for all living things
- DNA has a double helix shape
- DNA stands for Deoxyribonucleic acid
- A gene is a section of DNA located on chromosomes
- An allele is a variation of a gene
Matching DNA Bases
- Adenine (A) pairs with Thymine (T)
- Cytosine (C) pairs with Guanine (G)
- Example: AGCTGATT corresponds with TCGACTAA
Inheritance of Traits
- Dominant traits are expressed if at least one parent has them
- Recessive traits can be expressed even if neither parent shows them
- True-breeding means offspring inherit the same traits as parents
Pedigree Charts
- Male individuals are represented by squares
- Female individuals are represented by circles
Mutations
- Mutations can cause changes in traits
- Examples include a person with different colored eyes
Homozygous and Heterozygous
- Homozygous means having two identical alleles
- Heterozygous means having two different alleles
Identical Twins
- Identical twins develop from a single zygote
Gregor Mendel
- Gregor Mendel is considered the "father of genetics"
- He described the passing of traits before genes were understood
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Description
This quiz covers fundamental concepts in genetics, including DNA structure and function, inheritance of traits, and the basics of genotype variations such as homozygous and heterozygous conditions. It also introduces pedigree charts and discusses mutations and their effects. Test your knowledge and understanding of these essential biological principles!
