Single origin of life on earth

Assignment Help Biology
Reference no: EM1391657

Question: Suppose if life originated once on Earth, we might expect that it should be able to originate again, much like Lamarck hypothesized, but we do not observe this happening. All evidence points to a single origin of life on earth. Why do you think we do not see life originating again and again from scratch?

Reference no: EM1391657

Questions Cloud

Current state of government regulation of product safety : Examine the current state of government regulation of product safety to find out whether the referenced agencies are usually proactive or reactive.
Which of the following considerations is not a factor : Which of the following considerations is not a factor in deciding which forecasting model a firm should choose?
During both months the shop employed six full-time : Larry's Auto Body Repair Shop had revenues that averaged $60,000 per week in April and $50,000 per week in May. During both months, the shop employed six full-time (40 hours/week) workers.
Performance of the typical officer in each squad : If each group had 15 officers, how would you characterize the performance of the typical officer in each squad?
Single origin of life on earth : Suppose if life originated once on Earth, we might expect that it should be able to originate again, much like Lamarck hypothesized, but we do not observe this happening.
Sample size with confidence level-standard deviation : We want to estimate the population mean within 5, with a 99 percent level of confidence. The population standard deviation is estimated to be 15. How large a sample is required?
Using the appropriate productivity measure : Using the appropriate productivity measure, which of the following numbers represents the resulting productivity ratio?
Create and implement class called date to store month : Create and Implement the class called Date which has data members to store month (as a number), day, year, and name of month.
Discuss a potential application in your childcare profession : Select one analytic technique and discuss a potential application in your childcare profession. Be specific about your choice and how it applies to your profession.

Reviews

Write a Review

Biology Questions & Answers

  Detecting blood types for offspring

Filling out two Punnett squares for a cross between a male with blood type B and a female with blood type AB.  Build two Punnett squares and answer the following questions about them.

  Contraction of heart muscle

A rapid beat of heart over 100 beats per minute is known as ______. A beat slower than 60 is called ______. Lack of appropriate blood to the heart is known as ______. Rapid shuddering of the heart muscle is called ______.

  Diagnostic test for the situation

Eric is a twenty-one-year-old, sexually active college student who presents to the infirmary complaining of dysuria and pyuria.

  Cytokinesis is unequal during the meiotic divisions

In humans, oogenesis in comparison to spermatogenesis is different in that. cytokinesis is unequal during the meiotic divisions.

  Develop multiple petechiae and small bruises

A young man twenty-one years of age has come into the local health clinic with a hemoglobin of 11.9 gm/dL and a hematocrit of 25 percent.

  Cfficient system of carbohydrate digestion

Suppose if you could genetically engineer a more efficient system of carbohydrate digestion for the ruminant, what would you try to make the new system accomplish.

  Directional selection on quantitative traits

Discuss how it is that directional selection on quantitative traits can produce populations with trait distributions beyond what any parental generation had even without any new mutations creating new alleles.

  Describe how comb morphology is inherited

A different walnut rooster was crossed to a rose hen, and all the progeny were walnut. What are the probable genotypes of the parents.

  Explain why trauma to the base of the brain

Both endocrine and nervous systems are major regulating system of the body; though, nervous system has been compared to an airmail delivery system and the endocrine system to the pony express. In brief explain this comparison.

  Totipotent cell and a differentiated cell

Discuss the difference between a totipotent cell and a differentiated cell, genetically and morphologically?

  Variety of environmental conditions

Suppose that you discover a new plant species that seems to survive under a wide variety of environmental conditions. Explain an effective, but low budget approach to discern.

  What is the aim of ferementation after glycolysis

Why use starved starved yeast rather than sugar fed yeasts for fermentation.What is the aim of ferementation after glycolysis.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd