A synapse is a gap between one neuron and another. To communicate, a neurotransmitter has to be made and then used as a tool to stimulate the second neuron.
Synapses contain synaptic vesicles and other organelles such as the mitochondria.
Chemical neurotransmitters are manufactured by neurons in the main part of the cell, then stored in little bundles called synaptic vesicles and transferred to the synapses. They are then released into the space between the two neurons.
One type of neurotransmitter may stimulate and another type may be the opposite.
During synapsis in meiosis, homologous chromosomes pair up along their lengths to form tetrads. This is essential for crossing over to occur, where genetic material is exchanged between chromatids. Synapsis helps increase genetic diversity by introducing new combinations of alleles.
The purpose of synapsis in meiosis is to increase genetic variability. It does this as the homolog pairs match up, which means there are 4 chromosomes of like, but possibly unique, DNA data in the grouping. This allows the cell. as it proceeds through Anaphase 1 and Anaphase 2 to separate the individual chromosomes first into 2 pairs then as individuals, which inturn adds to the variability as 1 chromosome goes to each daughter cell. .
Crossing over occurs during synapsis, prophase I.
Synapsis and crossing over occur during prophase I of meiosis. During synapsis, homologous chromosomes pair up and exchange genetic material, a process known as crossing over, which increases genetic diversity.
Phosphate is not a period of time during which an event can occur.
synapsis
Tetrads form
Crossing over, also known as genetic recombination, is a unique event that occurs during prophase I of meiosis but not during prophase of mitosis. It involves the exchange of genetic material between homologous chromosomes, resulting in genetic diversity among offspring.
After condensing into long strands in the nucleus during Leptotene/Leptonema Chromosomes line up approximately with each other into homologous pairs. Telomeres cluster at one end of the nucleus and synapsis (pairing together of the homologous chromosomes) takes place in Zygotene/Zygonema.
The formation of a tetrad during meiosis occurs as a result of homologous chromosomes pairing up and aligning with each other. This alignment allows for the exchange of genetic material between the homologous chromosomes through a process called crossing over, promoting genetic diversity.
synapsis
During meiosis, the homologous chromosomes come together during prophase I. Pairs of homologous chromosomes align during a process called synapsis and form a tetrad (four sister chromatids, two from each pair of homologous chromosomes). During synapsis, crossing over may occur, during which homologous chromosomes exchange genetic material.