Non disjunction is the answer.
Synapsid is the chromosome coming close to each other to cross over.
Crossing over is the process of interchanging parts at a particular allele (loci)
Tetrad is a formation of chromosomes (looks like this “XX”)
Answer:
c. become capable of human-to-human transmission.
Explanation:
- The H5N1 flu virus is a virus that is capable of causing infectious respiratory disease in birds and hence, it is an avian influenza virus and the infection caused by it famously known as bird flu.
- When it comes to humans, the humans may acquire the infection from consuming or being in close contact with infected birds however, the incidences of the human pandemic are rare.
- The reason for fewer chances of a human pandemic is because for such a pandemic to occur person to person spread is needed which does not happen in case of bird flu.
Answer:
A differences in the density of ocean water
Explanation:. Salt water is denser than pure water. The density of water also depends on its temperature. Cooler water is denser than warmer water. Thus, both temperature and salinity affect the density of seawater.Cooler and saltier liquid water will sink, and warmer, less saline water will move in to replace it. As this process continues, it forms a worldwide “conveyor belt” of seawater. The cold, deep ocean current from the Arctic Ocean flows toward the North Atlantic Ocean and the warm surface currents flow from the North Atlantic Ocean toward the Arctic Ocean.
Answer:
a
Explanation:
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Large bodies of magma that solidify underground before they reach the surface of the crust are called plutons. Coarse-grained intrusive igneous rocks that form at depth within the earth are called abyssal while those that form near the surface are called subvolcanic or hypabyssal.