<span>Transmitted via neurotransmitters. There is a gap between two neurons. This place where the axon meets with dendrite is callde synapse. Neurotransmitters which are chemicals help transmit the signals from axon to dentrite. Calcium ions play major role in this process.</span>
Nonvascula<span>r plants are </span>bryophytes<span>.
</span>these plants are small.
They not only lack vascular tissues
they donot have true leaves, seeds, and flowers. Instead of roots<span>, they have hair-like </span>rhizoids<span> to anchor them to the ground and to absorb </span>water<span> and </span><span>minerals
</span>liverworts, hornworts, and moss<span>es. are examples</span>
Answer:
Option E, Crossing Over
Explanation:
In the process of crossing over, a chromosome is replicated to produce two sister chromatids.
Sister chromatids have genes that are divided and shared with the offspring in equal number. In this way genetic traits are exchanged and the offspring has a new set of genes.
This process takes place at the prophase stage of cell division.
Without crossing over, gene linkage is incomplete.
Hence , option E is correct
Limits to variation The most obvious limit to natural selection is that suitable variation may not be available. This may be because certain phenotypes cannot be built, being ruled out either by physical law or by the properties of biological materials.