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seraphim [82]
3 years ago
11

How does climate change happen

Biology
2 answers:
lisabon 2012 [21]3 years ago
8 0
Pollution by burning fossil fuels and cutting down trees
tiny-mole [99]3 years ago
7 0
Climate change happens by the circle of life
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Please help its due in a hour!!!!!
garri49 [273]

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>.

6 0
3 years ago
What is the relationship between diet and the structure of the digestive tract? minnows are mainly carnivorous, eating insects a
Ostrovityanka [42]
<span>Herbivores posses different digestive system than that of carnivores. In the course of evolution herbivory evolved with a complex digestive tract. There is no cannine teeth for herbivores. The stomach contains billions of bacteria. The intestine is 27 times longer in length than the length of its body.</span>
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3 years ago
Is Hh a homozygous or heterozygous ​
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Which disorder is likely to be present in the family, based on the illustrated inheritance pattern?
Mila [183]
The answer is color blindness
3 0
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What type of reactions creates bonds between monomers? What type of bond breaks bonds between monomers?
Tcecarenko [31]

Answer: dehydration synthesis reactions and hydrolysis.

Explanation:  

<em>Large biological molecules often assemble via dehydration synthesis reactions, in which one monomer forms a covalent bond to another monomer, releasing a water molecule in the process. </em>

<em />

<em>The process of splitting the bond between monomers is called hydrolysis.  Since a water molecule was lost during dehydration synthesis, hydrolysis brings the water back.</em>

<em />

<em />

7 0
3 years ago
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