Podcast
Questions and Answers
If two organisms share a more similar nucleotide sequence, what can be inferred about their relationship?
If two organisms share a more similar nucleotide sequence, what can be inferred about their relationship?
- They consume the same types of food.
- They inhabit different geographical regions.
- They are more closely related. (correct)
- They have different evolutionary origins.
What is the primary purpose of DNA replication?
What is the primary purpose of DNA replication?
- To reduce the size of the chromosomes.
- To repair damaged DNA.
- To ensure each new cell has a complete set of chromosomes. (correct)
- To introduce mutations into the genome.
During DNA replication, which enzyme is responsible for 'unzipping' the DNA molecule by breaking the hydrogen bonds?
During DNA replication, which enzyme is responsible for 'unzipping' the DNA molecule by breaking the hydrogen bonds?
- DNA polymerase
- Ligase
- Primase
- Helicase (correct)
Which of the following statements accurately describes the base pairing rules during DNA replication?
Which of the following statements accurately describes the base pairing rules during DNA replication?
Following DNA replication, what is the relationship between the original DNA molecule and the two resulting DNA molecules?
Following DNA replication, what is the relationship between the original DNA molecule and the two resulting DNA molecules?
During which phase of the cell cycle does DNA replication typically occur?
During which phase of the cell cycle does DNA replication typically occur?
What role does each strand of nucleotide serve during DNA replication?
What role does each strand of nucleotide serve during DNA replication?
What is the role of DNA polymerase in DNA replication?
What is the role of DNA polymerase in DNA replication?
The Human Genome Project (HGP) has significantly contributed to our understanding of which aspect of genetics?
The Human Genome Project (HGP) has significantly contributed to our understanding of which aspect of genetics?
Given an original DNA sequence of 'TA', what would be its complementary strand after replication?
Given an original DNA sequence of 'TA', what would be its complementary strand after replication?
Flashcards
Nucleotide Sequence Variation
Nucleotide Sequence Variation
The order of nucleotides in DNA varies among different organisms.
Nucleotide Order Similarity
Nucleotide Order Similarity
Closer related organisms show more similarity in their nucleotide order.
Human Genome Project (HGP)
Human Genome Project (HGP)
The Human Genome Project (HGP) mapped the sequence of nucleotide bases in humans.
Timing of DNA Replication
Timing of DNA Replication
Signup and view all the flashcards
Purpose of DNA Replication
Purpose of DNA Replication
Signup and view all the flashcards
DNA Template
DNA Template
Signup and view all the flashcards
Unzipping DNA
Unzipping DNA
Signup and view all the flashcards
DNA Base Pairing
DNA Base Pairing
Signup and view all the flashcards
DNA Polymerase Function
DNA Polymerase Function
Signup and view all the flashcards
DNA Replication Outcome
DNA Replication Outcome
Signup and view all the flashcards
Study Notes
- How are organisms different if DNA contains the same molecules?
- The order of nucleotides in DNA is different in different organisms
- The more closely related two organisms are, the more alike the order of nucleotides
- The Human Genome Project (HGP) has determined the sequence of nucleotide bases in humans
Replication of DNA
- Happens every time before a cell divides
- Occurs during the S-phase of interphase (growth of cell)
- This allows each new cell to have a complete set of chromosomes
- Each strand of nucleotides serves as a template, or pattern, to make a new DNA molecule
3 Steps
- An enzyme breaks the H-bonds of DNA, "unzipping" the DNA molecule
- Free nucleotides from the nucleus bond to the single strands by base pairing A with T and G with C
- Another enzyme called DNA polymerase bonds the new nucleotides into a chain
Result
- Two DNA molecules are identical to the original
Complementary Strand
- Each new molecule has a complementary strand to the original AT, AT, AT, TA, CG.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
