DNA and Mitosis
Topic 1 Test Review
Draw/diagram the relationship between DNA, a chromosome, a gene, a mutation, and an allele
Complete the complementary DNA strand using base pairing rules
Open Question: What is the function of the nucleus, and why is it important?
According to endosymbiotic theory...
- two bacterial cells merged and became a new kind of prokaryotic cell, called an Archaea
- eukaryotic cells evolved and differentiated into the two known groups of prokaryotic cells
- eukaryotic cells evolved from a symbiotic mutualism between an archaea and a bacterium
Prokaryotic cells: Domains: Archaea and Bacteria Evolutionarily older than eukaryotic cells Lack a nucleus and membrane-bound organelles Single circular chromosome with some smaller plasmids Always unicellular Eukaryotic cells: Domain: Eukarya Have a nucleus and membrane-bound organelles Pairs of linear chromosomes May be unicellular or multicellular
Prokaryotic vs. Eukaryotic Cells
Open Question: What are 3 pieces of evidence supporting endosymbiotic theory?
Open Question: What are some differences between DNA and RNA?
Draw/diagram the central dogma of molecular biology
Which of the following describes a codon?
- A region of DNA that codes for a protein
- The building block of DNA
- The building block of proteins
- A group of 3 nucleotide bases
Which kind of mutation would be most likely to have the worst consequences for an organism?
Word Cloud: What are some scientific benefits of GMOs?
Word Cloud: What are some scientific concerns about GMOs?
In fruit flies, presence or absence of wings is a Mendelian trait found on an autosome. Vestigial wings (n) are recessive to normal wings (N). In a lab, a heterozygous fly is crossed with a homozygous dominant fly. Complete the Punnett Square below and write in the probability that an offspring will be born with vestigial wings.
Flower color in snapdragons is a trait that has two alleles, one resulting in red flowers and one resulting in white flowers, and that displays incomplete dominance. Two heterozygous snapdragons are crossed. Complete the Punnett square below and label the flower colors (phenotype) associated with each offspring genotype.
In the pedigree below, the affected individuals are shown in black. None of the marriage partners from outside the family are heterozygous for the trait. What is the inheritance pattern for the trait?
- Autosomal dominant
- Autosomal recessive
- Sex-linked dominant
- Sex-linked recessive
In the pedigree below, the affected individuals are shown in black. None of the marriage partners from outside the family are heterozygous for the trait. Use a half-filled square or circle to identify individuals in each generation who must be heterozygote carriers for the trait.
Label the eukaryotic cell cycle in the diagram below. Include regulatory checkpoints.
Word Cloud: What is the purpose of mitosis in eukaryotic cells?
Open Question: What is the difference between a neuron and a skin cell found in the same person?