Crossing-over is the exchange of genetic material between homologous chromosomes. It results in new combinations of genes on each chromosome. When cells divide during meiosis, homologous chromosomes are randomly distributed to daughter cells, and different chromosomes segregate independently of each other.
The trait perspective focuses primarily on describing
individual differences. The trait approach emphasizes the difference in traits
per individual. Traits are known to be constant or stable description of
individuals for a period of time. The trait approach sees the interaction of
traits among other personalities.
Answer: number 1
Explanation: that is when we could first sustain life because that is when we gained atmosphere and when we could hold carbon and oxogen
Answer:
i don't get it , more info ?
Explanation:
Answer:
very few cells are able to reproduce
Explanation:
