The answer is C. simply because the rest are not benefits but rather are harmful occurrences
A. talk about sheep having arthritis which is a disease and in this case genetic modification is possibly the cause of it
B. the transfer of modified genes to other crops is not a good thing because the genes are modified and this can cause unknown negative mutations
D. in general unpredictable genetic changes are most of the time negative and there's a small chance of that mutation being positive
The genotype of the cross is 1 : 2 : 1 ( TT : Tt : tt )
The phenotype of the cross is 3 : 1 ( Tall : Dwarf )
<u>Explanation:</u>
Given:
Cross between two heterozygous tall pea plant
Let the allele of a tall pea plant be represented by T and for dwarf be t
In heterozygous condition, the genotype would be Tt
Cross between Tt X Tt is shown in the diagram inserted.
According to the cross performed:
The genotype of the cross is 1 : 2 : 1 ( TT : Tt : tt )
The phenotype of the cross is 3 : 1 ( Tall : Dwarf )
The chemical process is called precipitation.
Usually, a combination of salt and ethanol are added to a solution in order to allow the DNA to precipitate or come out of solution.
Polar molecules are those with uneven distribution of charges in their structure, which gives them partial positive and partial negative parts in their structure. In general, the rule in solubility is "like dissolves like," which means that polar or charged solutes can dissolve in a polar solvent. Ionic and polar solutes which are "attracted" to and dissolve in water are called "hydrophilic" (water-loving), while nonpolar solutes, which do not dissolve in water are called "hydrophobic" (water-fearing or hating).
DNA has a sugar-phosphate backbone in its structure. The phosphate (PO3-) groups of the backbone are negatively charged. Water, being a polar molecule (with the oxygen end being more negatively charged, and the hydrogen ends being more positive), can interact with the negatively-charged phosphate groups of the DNA and allow the DNA to dissolve in water.
When salt (usually sodium acetate) is added, the positive ions of the salt (e.g. Na+ for sodium acetate) interact with the negatively-charged ends of the phosphate groups (PO3-) in the sugar backbone. This "neutralizes" the charges of the negatively-charged phosphate groups. As a result, the amount of water molecules able to interact with the phosphate groups diminishes, and this lessens the solubility of the DNA.
However, because water has a relatively high dielectric constant (index of polarity), it would be fairly difficult for the Na+ ions to interact with the PO3- groups. Adding the ethanol, which has a lower dielectric constant than water, makes it easier for the Na+ ions to come together with the PO3- groups, and shields it charge from the water molecules. This makes the DNA molecules less hydrophilic and less soluble. As a result, the DNA molecules come out of solution (through a process called precipitation).
Dna is copied in a cell before a cell divides. Two nucleotide strands of original double helix separate along the strands. ... They move along the DNA molecule breaking the hydrogen bonds between the complementary nitrogen bases. Replication fork- y shaped region that results when two strands separate.
The Tassie Devil has held this title for over 80 years. Prior to 1936, the largest carnivorous marsupial in the world was the thylacline, which is commonly know as the Tasmanian Tiger. The thylacline is a distant relative of the Tasmanian Devil and was over the twice it’s size!
A mother gives birth to around 20-40 Joeys at once. However, these joeys have to race to her pouch, which only has 4 teats. Talk about a hard start to life!
Although the yawn is more a display of fear and anxiety than aggression.
