Meiosis I
Prophase I - homologous chromosomes form a tetrad, where they begin cross-over through the process of synapses.
Metaphase - homologous chromosomes then align along the metaphase plate.
Anaphase I - spindles then separate the homologous chromoses, pulling them to opposite poles of the cell
Telephase I - the cell creates a cleavage burrow inwhich the cell divides into two new cells with 46 chromosomes in the process of cytokinesis
Meiosis II
The same as mitosis
Prophase II - Nuclear envelope disintegrates, Sister chromatids migrate towards the metaphase plate.
Metaphase II - Sister chromatids align along the plate by their centromere.
Anaphase II- spindles pull the chromatin to opposites poles
Telephase II- cleavage burrow forms and cells seperate through cytokinesis
end result
4 haploid gametes are formed
Answer:
Option C. Mitosis produces cells used for growth and repair, while meiosis produces cells used for reproduction.
Explanation:
Mitosis is a type of cell division which occurs in somatic cells or body cells. These cells are responsible for increasing growth and development of an organism. While meiosis is a type of cell division which occurs in sex cells. These cells are responsible for reproduction in organisms.
Answer:
The postsynaptic cell has many synapses with many presynaptic neurons
Explanation:
Spatial summation is a process of producing an action potential in a neuron with input from multiple presynaptic nerve cells. This process determines whether an action potential will be triggered upon reaching threshold from multiple synapses with presynaptic neurons. Summation of all inputs determines if an action potential will b generated.
NO - Agriculture and industrial activities
FG - Industrial processes
CO - Burning fossil fuels
ME - Production of oil and natural gas
