1) Four Helixes in a double chromosome [ 2 for each strand ]
2) Centromere is t<span>he region of a chromosome to which the microtubules of the spindle attach, via the kinetochore, during cell division.
3) </span><span>A </span>homologous pair<span> is a </span>pair<span> of chromosomes containing a maternal and paternal chromatid joined to together at the centromere
4) End result = 12 pair of chromosome which is unindentical to each other.
5) Crossing over is </span><span>the exchange of genes between homologous chromosomes, resulting in a mixture of parental characteristics in offspring.
Crossing over occurs during prophase I in nucleus of the cell [ as it is operation of chromosomes ]
</span>Crossing over<span> creates new combinations of genes in the gametes that are not found in either parent, contributing to genetic diversity. So, it is so important for Genetic diversity
</span>
Hope this helps!
Answer:
Nitrogen fixing bacteria
Explanation:
Nitrogen-fixing bacteria are the microbial organisms that play an important role in the conversion of atmospheric nitrogen gas into reactive nitrogen such as ammonia, nitrogen oxide, and nitrous oxide. These types of bacterias are comprised of an enzyme known as the 'nitrogenase enzyme' that allows the nitrogen gas to mix with hydrogen and eventually produces ammonia.
This ammonia is then concentrated in the soil and is later taken up by the plants which are highly essential for them as they ammonia are their main source of nitrogen. This helps in the growth, development, and expansion of the overall plant body.
Answer:
its the last one 'population".
Answer:it is b,c,and e
Explanation:
tech tonic plates constantly move so most Ocean rocks are fairly "new" and the rocks that make up or contenents look like a jig saw puzzle that plus they also found fossils of ainchieant creatures in Antartic that are also in other continents too
