Answer:
Nebula: is an interstellar cloud of dust,hydrogen, helium and other ionized gases.
protostar: is a very young star that is still gathering mass from its parent molecural cioud.
Red Giant: is a luminous giant star of law or intermediate mass in late phase of stellar evolution.
Answer:
Metals tend to be lustrous, ductile, malleable, and good conductors of electricity.
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Answer:
D) It is a measure of distance.
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What Will Clean a Penny Faster, Water or Vinegar
Answer: The type of inheritance shown by the gene that control sickle cell anaemia is autosomal recessive inheritance
Explanation: Autosomal recessive inheritance means that there is mutation in two copies of the gene in a cell. Sickle cell anaemia is a condition caused by a single point mutation in the two beta chains of haemoglobin. Haemoglobin is a protein in the red blood cells responsible for oxygen transport to the cells. The mutation is caused by substitution of valine in place of glutamate at the sixth position of the two beta chains of haemoglobin.
Every individual has two copies of almost every gene, one from the mother, and one from the father. The autosomal recessive inheritance pattern of sickle cell gene means that for an individual to manifest outwardly as sickle cell, the two copies of the gene inherited from the parents are mutated.
