30 Questions
What is the total length of DNA in a single cell when stretched out?
2m
What is the rate of DNA synthesis in replication?
35bp/sec
What is the function of the enzyme Topoisomerase in DNA replication?
Undoing DNA supercoiling
What is the purpose of Punnett Squares in genetics?
To determine the genotype of offspring
What is the name of the process by which DNA is replicated?
DNA replication
What is the function of the enzyme Ligase in DNA replication?
Linking the bases of the new sequence together
What is the primary purpose of Punnett Squares in genetics?
To predict the probability of genetic inheritance
Which of the following is a key aspect of Mendel's laws of genetic inheritance?
Genetic traits are inherited in a predictable manner
What is the primary function of enzymes involved in DNA replication?
To unwind the double helix structure of DNA
What is the characteristic shape of the DNA molecule?
Helical
What is the primary role of DNA replication?
To transmit genetic information from one generation to the next
What is the significance of Mendel's laws in the context of genetics?
They predict the probability of genetic inheritance
According to Gregor Mendel's study, what is the basis of a Punnett Square in predicting the chance of inheritance?
The Law of Segregation
What is the main difference between Mendel's First Law and Second Law?
The Law of Segregation describes the random chance of alleles passing from parents to offspring, while the Law of Independent Assortment describes the segregation of alleles on different chromosomes
What did TH Morgan's work in the 1930s show?
A minority of genes are linked on the same chromosome
What is the term for the 'particulate matter' that parents pass on to their offspring, as hypothesized by Gregor Mendel?
Alleles
What is the main purpose of a Punnett Square?
To predict the chance of inheritance of specific traits
When was Gregor Mendel's work published, in relation to James Watson and Francis Crick's discovery of DNA structure?
100 years before Watson and Crick's discovery
What is the relationship between dominant and recessive alleles according to Mendel's Law of Dominance?
Dominant alleles mask recessive alleles
What is the purpose of a Punnett Square?
To determine the probability of certain traits
What is the ratio of purple to white flowers in the F1 generation if the purple allele is dominant?
3 purple: 1 white
What type of traits are controlled by multiple genes rather than a single gene with 2 alleles?
Hair color and curliness
What is the genotype of the parent in the Punnett Square if the offspring have a 1:3 ratio of YY:yy?
Yy
What is the probability that David and Sally's offspring will be carriers of the cystic fibrosis mutant gene?
100%
What is the probability that a child will be homozygous for the cystic fibrosis mutant gene if both parents are heterozygous for the gene?
1/4
According to Mendel's law of genetic inheritance, what is the probability that a trait will be expressed if an individual is heterozygous for that trait?
50%
What is the sugar molecule found in the backbone of DNA?
Deoxyribose
What is the base pairing rule in DNA?
A pairs with T, C pairs with G
What is the direction in which a sequence of DNA bases is 'read'?
From the 5’ end to the 3’ end
What is the term for the building blocks of DNA and RNA?
Nucleotides
Explore the fascinating world of DNA packaging and chromosomes. Learn how DNA is condensed into chromosomes and the role of histone proteins in this process. Test your knowledge of metaphase chromosomes and the structure of nucleosomes.
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