1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
likoan [24]
3 years ago
14

The β chain of adult hemoglobin is composed of 146 amino acids of a known sequence. in comparing the normal β chain with the β c

hain in sickle cell hemoglobin, what alteration is one likely to find?
Biology
1 answer:
Kipish [7]3 years ago
8 0

Out of the following given choices;

a.            Valine instead of glutamic acid in the sixth position

b.            Glutamic acid replacing valine in the first position

c.             Extensive amino acid substitutions

d.            Trinucleotide repeats

e.            Frameshift substitutions

The answer is A. this is caused by a mutation in the beta thalassemia genes on one of the 46 human chromosomes (chromosome #11) of the individual. The alpha subunit is normal in people with sickle cell disease. When sickle hemoglobin releases oxygen in the peripheral tissues, the molecules tend to stick together and form long chains or polymers. These rigid polymers distort the cell and cause it to bend out of shape from the normative disc shape.






You might be interested in
Which is composed of amino acids and determines all the structures and functions of organisms?
Bumek [7]

Protein, the building blocks of proteins are amino acids, different sequences and combinations of these amino acids result in huge numbers of proteins which have a variety of functions.

7 0
3 years ago
During a ________ moon, we see one whole side of the Moon here on Earth.
Vinil7 [7]
The answer is Crescent. 
<span>During a crescent moon, we see one whole side of the Moon here on Earth.
</span>

<span>New moon              -</span><span> the illuminated side of the Moon is away from the Earth. only  the shadowed side can be seen. </span>

><span>Waning gibbous    - </span><span>the Moon is less than fully illuminated, but, is more than half.</span>

<span>>Full Moon            - Brightest lunar phase.</span>

7 0
3 years ago
Read 2 more answers
The double fortification process involves adding which nutrient(s) to salt ?
densk [106]
The double fortification process involves adding iodine and iron to salt. It is a method used to fight micronutrient deficiencies in developing countries. Iron and iodine are two of the most important micronutrients involved in cognitive function, maternal and infant survival and human productivity. This is a cost-effective method that ensures that the population receives these nutrients without having to change their eating habits. 
4 0
3 years ago
Read 2 more answers
Which is a valid claim about how meiosis I differs from meiosis II?
baherus [9]

Answer:

Homologous pairs of cells are present in meiosis I and separate into chromosomes before meiosis II. In meiosis II, these chromosomes are further separated into sister chromatids. Meiosis I includes crossing over or recombination of genetic material between chromosome pairs, while meiosis II does not.

Explanation:

Hope this helps pls mark brainliest!!!

6 0
3 years ago
All of the following is true of GMOs EXCEPT
mel-nik [20]
B. Crops are modified genetically as well
3 0
3 years ago
Other questions:
  • The cutoff between normal and low birth weight is about ____ pounds.
    11·1 answer
  • 100 points and brainleist
    8·2 answers
  • The Jackson Prairie is a temperate grassland region in Mississippi, spread over an area of fertile soil. What could be a reason
    6·1 answer
  • Is the cell membrane of a cell with high mass or the cell membrane of a cell with low mass better able to feed the cytoplasm of
    14·1 answer
  • What organelle is in both plant and animal cells?
    15·2 answers
  • list four different potential problems of the female reproductive system and provide a brief description of each
    12·1 answer
  • In which process does water move from plants to the air?
    15·2 answers
  • Monomer of _____ consists of a sugar backbone, phosphate group anabases.
    10·1 answer
  • BRAINLIEST
    5·2 answers
  • What process occurs when the temperature equals
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!