The organization of similar organisms into groups helps scientists understand how living things are related. it also allows scie
ntists to communicate about all forms of life. scientists organize the living world using a process called taxonomy, which is the science classifying organisms based on shared structures, functions, and relationships to other organisms. scientists use a branching system of classification, and over the years, due to new discoveries, the branching system has changed and grown.
All living organisms are classified into one of three domains: Bacteria, Archaea, and Eukarya. Compare and contrast the domains bacteria and archaea. How are they alike? How are they different?
A. They are both composed of prokaryotic organisms. Bacteria are parasites and archaea are free- living.
B. both domains contain parasitic organisms composed of one cell. The Archaea are the disease- causing parasites.
C. Both are composed of prokaryotic organisms. the Archaea live in very extreme environments, like hot springs, bacteria do not.
D. Both are unicellular, prokaryotes. the Archaea live as parasites while the Bacteria live in extreme environments, like the salt flats and hot springs.
All living organisms are classified into one of three domains: Bacteria, Archaea, and Eukarya. Compare and contrast the domains bacteria and archaea. How are they alike? How are they different?
A. They are both composed of prokaryotic organisms. Bacteria are parasites and archaea are free- living.
B. both domains contain parasitic organisms composed of one cell. The Archaea are the disease- causing parasites.
C. Both are composed of prokaryotic organisms. the Archaea live in very extreme environments, like hot springs, bacteria do not.
D. Both are unicellular, prokaryotes. the Archaea live as parasites while the Bacteria live in extreme environments, like the salt flats and hot springs.
2 answers:
The correct answer is: C. Both are composed of prokaryotic organisms. The Archaea live in very extreme environments, like hot springs, bacteria do not.
Archaea and Bacteria are both prokaryotes meaning that they are single-celled organisms without nucleus or other membrane-organelles. Difference between these two groups include:
• The cell wall
• Spores
• Habitat
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Answer:
(a) 1/2; (b) no
Explanation:
Glucose-6-phosphate dehydrogenase deficiency (G6PD) is an X-linked recessive disorder and the woman's father was diseased so it means that woman is a carrier of the allele but has normal phenotype. It means that she will have XXᵇ genotype.
In contrast to this, her husband is diseased so his genotype will be XᵇY.
The Punnett square diagram related to the cross is attached.
(a) Proportion of their sons expected to be G6PD is 1/2:
They both may give birth to 4 progeny with genotypes XXᵇ, XᵇXᵇ, XY and XᵇY. It means they both may have 2 sons out of which one with genotype XᵇY will be diseased while the one with genotype XY will be healthy. So the proportion of their sons having G6PD is 1/2 or 50%.
(b) If the husband were G6PD deficient, the answer will not change.
The reason behind this is that this disease is caused by an allele located in X chromosome. But father contributes only Y chromosome to his son not X chromosome. The X chromosome will affect the genotype of his daughter not son that is why answer will not change. It means they will still have 1/2 of their sons diseased.
