Molecular Basis of Inheritance
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
|
|
||||
|---|---|---|---|---|---|
| Chargaff- | investigated DNA composition in different species, determined DNA held genetic material
🗑
|
||||
| DNA replication- | the process of how DNA is copied
🗑
|
||||
| Structure of DNA is- | double stranded, helix
🗑
|
||||
| Sugar and phosphate groups form ___________of DNA- | backbone
🗑
|
||||
| What makes up DNA? | sugar, phosphate group, nitrogenous base
🗑
|
||||
| What two things pair to make the rungs of the ladder of DNA? | purine and pyrimidine
🗑
|
||||
| Replication/origin sites- | spots along the length of eukaryotic DNA where replication starts
🗑
|
||||
| Semi-conservative replication- | proposed by Watson and Crick, the idea that DNA has to replicate itself
🗑
|
||||
| Initiator protein- | binds to the origin sight before replication can begin
🗑
|
||||
| Helicases- | unwinds at the site of origin
🗑
|
||||
| SSB proteins- | bind to single strands to hold DNA in unwound position
🗑
|
||||
| Topoisomerase enzymes- | relieve the supercoiling upstream of DNA replication by clipping the rejoining DNA strands
🗑
|
||||
| Primase- | enzyme made of RNA that synthesizes a short sequence of nucleotides called a primer that compliments the DNA template. New DNA strand grows from this.
🗑
|
||||
| DNA polymerases- | catalyze the synthesis of DNA, takes appropriate nucleoside triphosphate and attaches it to the 3’ OH terminal of new DNA
🗑
|
||||
| What direction do enzymes add nucleotides in? | – 5’ Right Arrow 3’
🗑
|
||||
| Nucleotide- | phosphate group, sugar, nitrogenous base that, put together, make up DNA
🗑
|
||||
| Replication fork- | a y-shaped portion where parent DNA is being unwound
🗑
|
||||
| Single strand binding proteins- | bind to unpaired DNA strands to keep them from re-pairing
🗑
|
||||
| Primer- | RNA chain synthesized by primase
🗑
|
||||
| Leading strand- | The strand created by the polymerase on the top of a bubble
🗑
|
||||
| Lagging strand- | bottom strand of a bubble that has to be replicated away from the replication fork
🗑
|
||||
| DNA Ligase- | joins sugar-phosphate backbones of all Okazaki fragments
🗑
|
||||
| Okazaki fragments- | fragments of the lagging strand
🗑
|
||||
| Proof-reading and repairing DNA- | Checks the new nucleotides and replaces the incorrectly pairing nucleotides
🗑
|
||||
| Mismatch repair- | many repair enzymes remove and repair DNA mismatches after synthesis occurs
🗑
|
||||
| Nucleotide excision repair- | repairs larger-scale damage to DNA strand
🗑
|
||||
| Telomeres- | the ends of chromosomes, short nucleotide sequences repeated countless times, protect organic genes
🗑
|
||||
| Repeated sequence in humans- | TTAGGG
🗑
|
||||
| Packaging of chromatin involves- | DNA, Histones, Nucleosomes, 30 nm fiber, looped domains, metaphase chromosome
🗑
|
||||
| Histones- | protein responsible for the first level of DNA packing in chromatin
🗑
|
||||
| Nucleosomes- | histones coiled with DNA strands
🗑
|
||||
| 30 nm Fiber- | interactions between the histone tails and linker DNA, pulls it all in tighter
🗑
|
||||
| Loops domains- | 30 nm fiber forms loops, making a tighter fiber
🗑
|
||||
| Chromosomes- | packed histones and DNA
🗑
|
||||
| Chromatid- | one half of a chromosome
🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Created by:
mr_spangler
Popular Biology sets