Answer:
The right atrium takes blood from the veins and pumps it into a ventricle
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Answer: Floods are a natural part of the water cycle, but they can be terrifying forces of destruction. ... Floods usually occur when precipitation falls more quickly than that water can be absorbed into the ground or carried away by rivers or streams.
Explanation:
the mutation occurred in the gametes
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Answer:
The muscle has two, three, or four origins, respectively.
Explanation
- A muscle is an organ composed of muscle tissue that contract to facilitate a particular movement
- biceps,triceps and quadriceps are types of skeletal muscles since they use bones as levers
- <em><u>They differ in that; the biceps have two origins, triceps have three origins and quadriceps have four origin.</u></em>
- <em><u>Bicep is a two headed muscle thus said to have two origins ,triceps have three muscle heads and therefore have three separate origin attachment point while quadriceps are made of four muscles heads hence have four origins. </u></em>
Answer:
In humans, genetic variations are caused because humans reproduce by a sexual life cycle which is termed as meiosis. In such a life cycle, the offspring receives half the chromosomes from the mother and half from the father. Crossing over and random assortment of chromosomes are two phenomenons which occur during meiosis. Due to these two phenomenons, genetic variations are caused.
During crossing over, the exchange of DNA segments between the homologous chromosomes takes place which brings about the genetic variations.
