A sample of DNA is taken from blood of saliva. PCR makes lots of copies, or amplifies the DNA. We then add restriction enzymes to cut the DNA at palindrome sequences. We then run the DNA through gel Elecrophoresis. Each person has unique short tandem repeats that cause a unique number of cuts by the restriction enzyme. These cuts are separated by size on gel electrophoresis, so no two people have the exact same pattern. We can compare individuals banding patterns to what is found at a crime scene, taken in previous samples, in a baby, and the sample that matches all the banding patterns will be the individual.
Ans:
Please read the explanation section.
Explanation:
Vegetative propagation does not require seeds or spores to produce offspring. In this propagation, offspring grow from a specific part of the parent plant. In different plants, vegetative propagation happens in different ways. Here are a few examples.
- Garlic, onions, and tulip plants all reproduce using genuine bulbs/true bulbs. These short covered stems are also called scaly bulbs because it has many layers.
- Crocuses reproduce using corms. Corms are similar to genuine bulbs. But, a corm doesn’t have as many layers as true bulbs.
- Potato plants reproduce using tubers. These underground growths propagate new plants from stems or growing points, which is called eyes.
- Ginger plants reproduce using rhizomes. These stems are those which grow sideways along with the soil or just below the surface.
- Strawberry plants reproduce using stolons. Stolons are looking like branches growing along the ground.
<span>DNA damage leads to mistakes in mitosis that produce cancer</span>
Answer:
Genotype: Bb (heterozygous)
Phenotype: brown fur
Explanation:
Since allele B is dominant to allele b, as long as genotype has allele B in it, its effect of phenotype will be expressed instead, regardless of whether allele b is present.
As mouse genotype is stated as Bb, on the chromosome from its parents, allele B comes from one parent while allele b is inherited from the other parent.
Phenotype is the expressed trait. In this case, as genotype has allele B, the phenotype will be brown fur as its effect is expressed.
