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Vinvika [58]
3 years ago
5

Which question could be answered using DNA as a molecular clock? How old is a dinosaur bone? How long ago was a dinosaur track l

eft in the mud? How long ago did two species of birds share an ancestor? How old was a bird when it died?
Biology
2 answers:
Harrizon [31]3 years ago
8 0
How long ago did two species of birds share an ancestor
Bingel [31]3 years ago
7 0

Answer:

How long ago did two species of birds share an ancestor?

Explanation:

Molecular clocks estimates the time of divergence of two species or populations from each other. The process compares the total number of different nucleotide present in genome of two organisms. The average rate at which the specific gene evolves tells about the dates of evolutionary branch points. By comparing the total number of different nucleotides present in genome of two birds species, molecular clock can answer "How long ago did two species of birds share an ancestor?"

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Enfermedades por deficiencia de fosforo
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Answer:

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Explanation:

espero y te sirva

4 0
3 years ago
All fungi are...
vlada-n [284]

Answer:

A. eukaryotes and heterotrophic

Explanation:

Remember Fungi is not either bacteria or a plant. But we know Fungi has a membrane-bound nucleus that makes it eukaryotic. They obtain material from the enviroment, instead of creating their food, which makes them heterotrophic.

4 0
3 years ago
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Which definition is the best for “semipermeable membrane”?
levacccp [35]

Answer:

Choice B

Explanation:

"Permeable" means "Letting solids or liquids through (a material.)" "Semi" means "half or partly." So "semipermeable" means allowing some objects through, but not all.

4 0
3 years ago
Twenty-five people developed symptoms of nausea, vomiting, and diarrhea three to six hours after attending a church picnic where
Rus_ich [418]

Answer:

e. staphylococcal enterotoxin

Explanation:

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Staphylococcal enterotoxin is proteinous in nature and it can be found on dairy products such as milk or cheeses that have been contaminated by Staphylococcus aureus.

After consumption of the contaminated milk or cheeses, the person begins to experience symptoms of nausea, diarrhea as well as vomiting.

Staphylococcal enterotoxin is a very heat stable toxin which means even though you heat up a food contaminated with this toxin, the bacteria may die by the toxins would still remain in the food.

The best way to avoid food poisoning by Staphylococcal enterotoxin is to avoid eating contaminated foods.

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2 parents one with AB blood type and one with b type can they produce a child with A blood type
noname [10]

Answer:

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5 0
2 years ago
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