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kkurt [141]
2 years ago
6

In humans, the embryonic and fetal forms of hemoglobin have a higher affinity for oxygen than that of adults. Why is this the ca

se? a. Nonidentical genes produce different versions of globins during development. b. Pseudogenes interfere with gene expression in adults. c. The attachment of methyl groups to cytosine following birth changes the type of hemoglobin produced. d. Histone proteins change shape during embryonic development.
Biology
1 answer:
Bezzdna [24]2 years ago
6 0

In humans, the embryonic and the fetal forms of haemoglobin have a higher affinity for oxygen than that of adults this is because non-identical genes produce different versions of globin during development. So the correct option is A.

<h3>What is meant by oxygen affinity? </h3><h3> </h3>

The amount of oxygen delivered to the cells will depend on the haemoglobin's oxygen affinity.  

Oxygen affinity is defined as the relationship between the saturation of haemoglobin oxygen, represented by SaO2 and the oxygen tension, represented by PaO2. This relationship is plotted by a dissociation curve which is S-shaped.  

Thus, in the embryonic the fetal form, haemoglobin has a higher affinity for oxygen.

Therefore the correct option is A.

Read more about haemoglobin, here

brainly.com/question/517799

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The right answer is speed the recycling of nutrients.

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Saprophytes are living organisms that live and take their nutrition from dead and dead organisms. They break down the complex organic matter into simpler substances which is then taken up by the plans to conducting numerous metabolic activities.

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Which feature do all adult echinoderms have?
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3 years ago
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Dna sequencing suggests that among the green algae, the __________ are most closely related to land plants.
makkiz [27]

DNA sequencing suggests that among the green algae, the Stonewort are most closely related to land plants.

<h3>What is DNA Sequencing ?</h3>

DNA Sequencing is a technique to determine the bases, nucleic acid sequence in the DNA. It is important to know the functions of genes, coding and non-coding part of proteins, identify the diseases, effectiveness of drug delivery etc.

<h3>What is Land plants and Stonewort ?</h3>

Stonewort is commonly known as Chara . It is a freshwater green algae which comes from the Charophyta division. Fossils of Charophytes shows that Stonewort is a type of algae which is 470 million years old.

Thus from the above conclusion we can say that DNA sequencing suggests that among the green algae, the Stonewort are most closely related to land plants.

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5 0
1 year ago
some scientists believe that if __________ could be lengthened, age-related problems could be slowed.
Nostrana [21]

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Telomeres

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Telomeres are present at the ends of chromosomes and prevent the lose of genes. They shorten as a person ages. Thus lengthening them may slow down age related problem.

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3 years ago
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