The uniramous type of t<span>he </span>appendages<span> of </span>arthropods are comprised of a single series f segments attached end-to-end, rather than branching into two. The other type of arthropod appendages are biramous. The biramous limb <span>branches into two, and each branch consists of a series of segments attached end-to-end.</span>
The first example is a qualitative data while the second example is a quantitative data.
TYPES OF DATA:
- Data refers to raw information. It is important to collect data in an experiment. There are two major types of data namely:
- Quantitative data: This refers to numerical information i.e. involves numbers that are countable. e.g. 10 houses, 5 goats.
- Qualitative data: This refers to information regarding the quality of something. They cannot be counted as opposed to quantitative data, they can only be described. For example, yellow bag etc.
- Therefore, the expression that "plant produced yellow flowers" is a qualitative data while "fertilizer A produced 5 flowers" is a quantitative data.
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Answer:
Homologous pairs of chromosomes are lined up independently of other such pairs during <u>metaphase I.</u>
Explanation:
Meiosis is a special type of nuclear division that occurs only in organisms with sexual reproduction. The meyotic division gives rise to gametes.
The division begins just after the chromosome DNA has replicated in the S phase. Each chromosome is made up of two identical sister chromatids joined by their centromere. However, chromosomes are not kept separate in the nucleus, but instead bind to their homologous partners. This union called synapse, occurs during prophase I.
In metaphase I, the pairs of chromosomes are aligned in the spindle Ecuador, that is, during this stage, the homologous pairs are aligned in the metaphase plate (which is the equatorial plane of the achromatic spindle) for separation.
During anaphase I, the members are directed to the opposite poles of the cell. Telophase I, this phase begins with the arrival of chromosomes at the poles and with the formation of a nuclear envelope around each group of chromosomes. During Profase II, the nuclear membrane (if formed during Telophase I) dissolves, and spindle fibers appear.
The first meyotic metaphase and anaphase is usually completed in a short time to give rise to the phases of the second division (metaphase II and anaphase II) , which is a mitosis during which the centromeres divide and the chromatides move towards opposite poles to become gamete chromosomes. In telophase II, cytokinesis separates cells.
Answer: With gene therapy
Explanation:
Manipulation of DNA or RNA is used to treat disease with gene therapy. This type of therapy is introducing genetic material into cells because it should compensate for abnormal genes or it should also make a beneficial protein.
Gene therapy is able in some cases to introduce a normal copy of the gene and after that, it can restore the function of the protein.
