Answer:
A) igneous rock
Explanation:
Igneous rock is formed when molten rock from underground moves to the surface.
There are three types of rock
1. Igneous rock: This is formed when molten rock (magma or lava) cools and solidifies.
2. Sedimentary rock: As the name implies, it is formed by the coming together of small particles such as gravel, sand, silt, or clay.
Metamorphic rock: This is a rock formed from existing rock. It is formed by the gradual disintegration of existing rocks caused by heat or pressure.
Answer: Venus, Mercury and Mars are the differentiated planets.
Planetary differentiation can be defined as the process by which the separation of different types of constituents takes place. They are differentiated on the basis of their chemical or physical behavior.The denser material of the planets sink to the center of the planet and the less denser particles rise at the surface of the planet.
That is true because that’s where it’s mostly are
Answer:
Yes, extra chromosomes can be received by the tasmanian devil.
Explanation:
Extra chromosomes can be received by the tasmanian devil due to tumor disease in the tasmanian devil. In the beginning the old genome of tasmanian devil has 13 chromosomes but with the tumor disease, it receives one extra chromosome and completed 14 chromosomes. Tumor occurs when the dead cells are not removed from the body and the new ones are formed.
Answer:
1. The difference between the normal hemoglobin protein DNA sequence and the sickle cell hemoglobin DNA sequence is a base to base shift, in this case adenine (GAG) to thymine (GTG).
2. The difference affects the amino acid sequence of the protein by replacing glutamic acid (Glu) with valine (Val).
Explanation:
In sickle cell anemia, a change in the DNA nucleotide sequence is observed, where adenine is substituted by thymine, whose expression is the change in the amino acid sequence of globine β, incorporating valine instead of glutamic acid. This represents a molecular mutation - point mutation - by subtitution, which corresponds to missense mutation.
<u>Normal hemoglobin protein in a RBC</u>
DNA CTG ACT CCT GAG GAG AAG TCT
Amino acids Leu Thr Pro Glu Glu Lys Ser
<u>Sickle cell hemoglobin protein in a RBC</u>
DNA CTG ACT CCT <em>GTG</em> GAG AAG TCT
Amino acids Leu Thr Pro <em>Val</em> Glu Lys Ser
When GAG is transcribed to mRNA, the CUC codon is obtained, which codes for glutamic acid. Thymine substitution causes the DNA sequence to change to GTG, which is transcribed as CAC, the codon that encodes the amino acid valine. The <u>change from glutamic acid to valine in β-globin causes an altered hemoglobin, giving the abnormal erythrocytes observed in sickle cell disease</u>.
