Answer:
Absence of a nucleus
Explanation:
In eukaryotic cells, DNA is typically harvested and saved in the nucleus, though prokaryotic cells lack a nucleus, so the DNA merely floats in the cytoplasm instead.
The term ‘Crossing over’ was used by Morgan and Cattell. It is a process in which there is exchange of chromosome segments between non-sister chromatids of a homologous chromosomes. It occurs during pachytene stage of prophase I of meiosis cell division.
Significance of crossing over:
- Crossing over provides genetic variation in all sexually reproducing organisms.
- It creates new combination of genes or genetic recombination and produces hybrids.
Helpful, because when you clean the beach you are helping the ecosystem and wildlife.
When altitude increases, air temperature decreases because when there is an increase in altitude, there is a decrease in air pressure. When air pressure decreases, air cools down. Latitude affects temperature because the closer you are to the equator, the more intense the sun will be.
