The use of restriction enzymes and electrophoresis to generate a map of the DNA molecule is known as RESTRICTION MAPPING. This technique is used to map an unknown fragment of DNA.
Restriction enzymes are enzymes that cut a DNA fragment at specific nucleotides sites, thereby generally smaller fragments of DNA.
Restriction mapping is a strategy used to map unknown fragments of DNA by digesting them into smaller fragments and then identifying the specific sites of the DNA breakpoints.
Restriction mapping can then be used to create a diagram of fragments of DNA marked with specific sites where they are cut by specific restriction enzymes.
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1. two cell divisions = meiosis.
In meiosis one 2n (diploid) cell divides into 4 n (haploid) genetically diverse cells. There are two divisions. 1 -> 2 -> 4. In mitosis one diploid cell divides into two identical diploid cells, so there is only one division.
2. DNA replication = both!
In the life cycle of any cell (cell cycle), during the synthesis period of interphase DNA replication occurs. Cells have unduplicated chromosomes in G1 (before replication/synthesis) and duplicated chromosomes in G2 (after replication/synthesis). In mitosis, they are replicated so that the chromosomes can be split into two cells (duplicated chromosomes are ripped in half, so the daughter cells have unduplicated chromosomes after cell division). In meiosis, they are also replicated for the same reason, but the homologous pairs are additionally split up so that the four daughter cells are all haploid.
3. chromosomes pair up = meiosis
In meiosis the additional "sorting" of genetic information happens because 1 diploid cell is going to make 4 haploid cells. The homologous pairs find their mate and during metaphase I the homologous chromosomes line up in pairs and one of each pair is divided into the first division of cells. This "pairing up" happens in prophase I of meiosis and is called "synapsis"!
4. spindle fibers form = both!
In both mitosis and meiosis the spindle fibers come out from the centrosomes and attach to the chromosome halves in mitosis and meiosis II and attach to each chromosome of the homologous pairs in meiosis I. The basic process of division is the same in both.
5. one cell division = mitosis
See my answer for #1.
6. cytokinesis = both!
Cytokinesis is the splitting of the cytoplasm and the essence of "cell division," which happens in both mitosis and meiosis. It just happens twice in meiosis.
7. four daughter cells = meiosis
In meiosis one diploid (2n) somatic cell divides to form 4 genetically diverse haploid (n) gamete cells. Remember this!
Answer:
Sunlight, grown produce, and wood
Explanation:
The three renewable resources used by the restaurant are sunlight, grown produce, and wood.
<em>Renewable resources are those resources that are naturally or otherwise replenished within a certain time period. The solar panels used to generate electricity makes use of the renewable energy of the sun. In the same vein, the grown produce and the wood used in preparing food by the restaurant are from plant biomass. The biomass is derived indirectly from the sun as well.</em>
All other materials resources used by the restaurant are not renewable but might be recyclable.
Answer:
Tommy John surgery repair the ulnar collateral ligament.
Explanation:
Tommy John surgery is the reconstruction of a torn ulnar collateral ligament which is located on the inner side the elbow that holds or support the elbow joint. The purpose of the surgery is to eliminate pain and stabilize the elbow and restore the range of motion. This surgery is often given to players that excessively uses the elbow and the first to undergo this procedure was Tommy John, a baseball pitcher in 1974.