Answer:
Crossing over increases the genetic variation
Errors in crossover formation result in chromosomal rearrangements (duplications and deletions) and may also cause chromosome nondisjunction
Explanation:
Crossing over, also known as recombination, refers to the exchange of genetic material (DNA) between non-sister chromatids of homologous chromosomes during meiosis. Crossing over increases the genetic variation of the resulting gametes, allowing different genetic combinations to be passed from parents to offspring. Unequal crossing over is a type of error associated with chromosomal duplication and/or deletion events. Unequal crossing over occurs when homologous sequences are not paired precisely. Moreover, errors in crossing over may also cause chromosome nondisjunction, thereby leading to aneuploidies.
Genes<span> for medically important </span>proteins can<span> be cloned and inserted into </span>bacteria<span>, as shown in the diagram below. </span>Why can bacteria recognize a human gene and then produce a human protein<span>? A. DNA replication in </span>bacteria<span> and </span>humans<span> is the same. B. </span>Bacterial<span> cells contain the same organelles as </span>human<span> cells.</span>
Answer:
Hypertonic
Explanation:
Hypertonic solutions have less water ( and more solute such as salt or sugar ) than a cell. Seawater is hypertonic. If you place an animal or a plant cell in a hypertonic solution, the cell shrinks, because it loses water ( water moves from a higher concentration inside the cell to a lower concentration outside ).
The start from an are of high concentration to an area of low concentration until it's evenly spread out
