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Sickle cell anemia results from a mutation in a gene called HBB, which contains the blueprint for cells to make part of a protein called hemoglobin. The hemoglobin protein is made up of two alpha chains and two beta chains.
Sickle cell anemia is the result of a point mutation, a change in just one nucleotide in the gene for hemoglobin. This mutation causes the hemoglobin in red blood cells to distort to a sickle shape when deoxygenated. The sickle-shaped blood cells clog in the capillaries, cutting off circulation.
1. Answer:
<span>It implies that prokaryotes existed before eukaryotes.
It implies that eukaryotes evolved from prokaryotes.
Prokaryote and eukaryote are used as a result of an evolutionary worldview.
All of the three sentences is true. The word "pro-" from prokaryotes means "before". So, prokaryotes sound like an organism that exists before </span>eukaryotes. If you link it with evolution, you can assume that eukaryotes were prokaryotes that evolved.<span>
</span><span>2. Answer:
food spoilage
flavor food
make cheese
make yogurt
decomposition
Measles can be excluded easily because it was caused by virus, not bacteria. Food spoilage is caused by bacteria. That is why food preservation method would result in killing/inhibiting bacteria. </span>Decomposition is similar to spoilage. Bacteria also used for fermentation in cheese, yogurt or beer.
The statement is true. The male and female embryos anatomically look same at five weeks of pregnancy.
In the 4th week of pregnancy the blastocysts gets implanted in the walls of uterus and develops into the placenta and then becomes an embryo. The embryo is considered starting from the point when the amniotic sac develops which is at the starting of the 5th week of pregnancy. By the 12th week of pregnancy the organs are developed such as arms and legs but the brain and spinal cord keeps developing throughout the pregnancy.
The second trimester begins at the 13th week of the pregnancy and by the 14th week the gender can be identified. So the male and female embryos are anatomically same at 5th week of the pregnancy.
Answer:
✅True
Explanation:
Density is an intensive physical property because the density of a given substance does not change with the size of the sample.
IamSugarBee
Coordination because with out that u can't do anything