Answer:begins without any further replication of the chromosomes. the nuclear envelope breaks down and the spindle apparatus forms
Explanation:
Answer:
Photosynthesis and Oxidative Phosphorylation
Explanation:
The mitochondria uses oxygen within the cell to convert the chemical energy we get from the foods we eat, this makes energy in a usable form.
Chloroplasts help plant cells undergo the process of photosynthesis
Active transport uses energy passive transport does not..... active transport moves from lower to higher concentration and vice versa in passive transport.... both use carrier proteins....
Answer:
Crossing over is the phenomenon by which homologous chromosomes exchange DNA segments between them during the process of meiosis.
If crossing over did not occur, there will be no genetic variation among parents and offsprings.
If the process of meiosis did not occur, there will be lesser chances of genetic variations to occur. Each chromosome will be either from the father or the mother with no genetic diversity present in it. As a result, genetic diversity will reduce.
There is only about 3 percent of freshwater on earth
