Meiosis
Define homologous chromosomes
Pair of matching chromosomes from each parent;
A mutation that does not change the sequence of amino acids and does not cause disease.
What is a silent mutation?
The enzyme that builds the mRNA from the DNA template
RNA polymerase
Define tetrad
A tetrad is a group of four chromatids formed during prophase I of meiosis when homologous chromosomes pair up (synapsis). Each chromosome consists of two sister chromatids; therefore, a paired set of homologous chromosomes (one paternal, one maternal) creates a bundle of four,
Result of meiosis:
4 haploid gametes
Phase that builds two new nuclei
Telophase 1
My chinese zodiac sign
Ox
Sources of genetic diversity among gametes
Crossing over, indepdendent assortment
A mutation that results in a stop codon being in the wrong place.
Non-sense mutation
What does it mean for codons to be unambiguous
Dougie's favorite stuffed animal
bunny
Which meiosis division most closely resembles mitosis?
Meiosis II
What does it mean that codons are redundant?
Multiple codons will code for the same amino acid.
2 types of post transcriptional modifications
splicing, siRNAs
List three types of large-scale chromosomal mutations
Deletion, insertion, translocation, inversion
The DNA template strand reads CCA. What would the anticodon read?
CCA
The original strand of DNA is ACT TTG CGA The mutated strand of DNA is ACT TTC GA This is a _______________ mutation that causes a _________ of amino acids.
What is a deletion? What is a frameshift?
A disease that results in a change in the shape of hemoglobin in red blood cells due to a point mutation.
What is sickle cell anemia
Role of acetylation in gene regulation
adding acetyl groups, loosens chromatin enhancing rate of transcription