Answer:
Crossing over and random alignment are the events of meiosis-I that add new gene combinations to the gametes. Random fusion of male and female gametes is called random fertilization.
Explanation:
During the pachytene stage of meiosis-I, part of the chromatids of each of the homologous chromosomes of a bivalent is broken apart and exchanged. This exchange of the genetic material between the members of a bivalent is called crossing over. The recombinant chromatids formed by crossing over have new allele combinations that were otherwise not present in the parental chromatids.
During metaphase I, the homologous pairs are aligned at the cell's equator in a random manner. This means that either the paternal or maternal chromosome of a pair may face one or the other pole of the cell. The arrangement of chromosomes during metaphase-I determines whether the paternal or maternal chromosome of each pair would be distributed to one or the other pole of the cell. This random segregation creates new gene combinations in gametes.
All the gametes have equal chances of getting fused with a gamete from the opposite gender. This is called random fertilization and further adds variations.
Hello. Your question is incomplete. However, I managed to find a question exactly like yours on the internet and managed to realize that you forgot to say that your question asks you to give an example of the statement presented above.
Answer:
A major disturbance from which the ecosystem was able to recover completely was the disease that almost wiped out all of Ireland's potato in 1840.
Explanation:
You may have heard of the Irish Potato Famine, which was a time when the Irish population lived very difficult days, after an illness that almost decimated the country's potato plantations.
The potato was the main source of food for the Irish, but in 1840, a fungus called Phytophthora infestans, managed to infect almost all potato plantations in the country, preventing the potato from being harvested and could be consumed. This created major economic and social problems in Ireland, as people suffered from hunger, poverty and the diseases that arose, which caused many Irish people to immigrate to other countries, or to die.
The fungus plagued the ecosystem for years and only started to decrease in intensity in 1850, once the ecosystem started to recover. Currently, although the pest still exists, the Irish ecosystem is completely recovered and the pest is controlled and is unable to make such an impact.
Answer:
No, lysosomes and vacuoles are not the same.
lysosomes are membrane bound sacs filled with digestive enzymes.
they digest a by foreign material and the worn out cells
they are known as the (brainly won't let me use the right word) <em><u>k</u></em><em><u>i</u></em><em><u>l</u></em><em><u>l</u></em><em><u>i</u></em><em><u>n</u></em><em><u>g</u></em><em><u> </u></em><em><u>i</u></em><em><u>t</u></em><em><u>s</u></em><em><u>e</u></em><em><u>l</u></em><em><u>f</u></em><em><u> </u></em>bags of the cell.
vacuoles are storage sacs of the cell for solid or liquid contents.
they are very small in animals and large in plant cells.
they provide the cell with turgidity and rigidity.
Explanation:
please give me brainliest.
Answer:
There is an increase in demand for higher quality and quantity of food and other products.
Explanation:
There is an increase in demand for higher quality and quantity of food and other products. So, there is a huge requirement for technological innovation. Investment is needed in research and development to develop crops that are pesticide-free, resistant to disease, and able to face various weather conditions. Vertical farming and carbon-capture technology can be used to meet growing world food demands.
