Answer:
The valves' main job is to keep the blood moving in one direction – back up towards the heart. When the valve is open, blood freely flows upward towards the heart and when the valves are closed, blood cannot flow back
Answer:
Prokaryotic genomic DNA is attached to the plasma membrane in the form of a nucleoid, in contrast to eukaryotic DNA, which is located in a nucleus.
Explanation:
Answer:
A new study of plants that are reproduced by 'cloning' has shown why cloned plants are not identical. Scientists have known for some time that 'clonal' (regenerant) organisms are not always identical. Now researchers believe they have found out why this is the case in plants: the genomes of regenerant plants carry relatively high frequencies of new DNA sequence mutations that were not present in the genome of the donor plant.
Explanation:
The Spanish scientist should bear in mind that the production of eggs of salmon is dependent on lots of factors apart from the temperature. These factors include type of water, nutrients, etc. If these factors are also set constant then, the scientist can expect the same result from his friend.
Tropical rainforest is a biome which is warm and wet, with little seasonal variation in temperature and frequent precipitation.
<h3>What is a Biome?</h3>
This is referred to an environment which is greatly influenced by abiotic factors such as soil, climate etc and varies all over the world.
Tropical rainforest as the name implies has a large and frequent amount of precipitation thereby making it wet with little seasonal variation in temperature. It is also characterized by large trees which form canopies in the region.
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