Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Biology Expert

One evolutionary idea is that the number of amino acids differences in a similar protein from different species can be used as an evolutionary clock. The rate of amino acid substitution varies among proteins as shown in the following table:

Protein changes per protein per billion Year
Fibronectin 9.0
Phospholipase A2 1.9
Cytochrome b5 0.45
Lactate Dehidrogenase 0.34
Cytochrome c 0.22
Histone 4 0.01

a) what is the average rate of amino acid substitution among all the proteins shown?

b) on average, how long would it take to make one change in histone H4? would this serve as a good evolutionary clock?

c)In the time it takes for one change in cytochrome b5, how many changes would we expect to find in fibronectin?

d) In the two million years' time that horses have been differentiated from donkeys, how many amino acid substitutions would be found altogether in these six proteins?

Biology, Academics

  • Category:- Biology
  • Reference No.:- M943806

Have any Question? 


Related Questions in Biology

Explain how resource partitioning led to character

Explain how resource partitioning led to character displacement in the interactions between the benthic and limnetic sticklebacks in Paxton Lake.

Select one chronic illness that could be diagnosed early in

Select one chronic illness that could be diagnosed early in life, such as asthma, diabetes, or rheumatoid arthritis. Follow a person with this chronic illness through the lifespan, discussing how treatment approaches wou ...

Case study over 30 children younger than 3 years of age

Case study: Over 30 children younger than 3 years of age developed gastroenteritis after visiting a local water park. These cases represented 44% of the park visitors in this age group on the day in question. Older indiv ...

In this assignment you will select a fermented food or

In this assignment, you will select a fermented food or beverage from the list provided. After making your selection, you will prepare a 3 page written report about it. The report should include historical information re ...

A 74-year-old woman is transported to a regional burn

A 74-year-old woman is transported to a regional burn center after being rescued from a house fire. Apparently, a space heater was knocked over and an area rug caught fire. The fire quickly spread throughout the house. S ...

Imagine that you had 11000 of the worlds gross domestic

Imagine that you had 1/1000 of the worlds gross domestic product available at your disposal for conservation biology product? Is it a sound conservation decision to protect just 4% of the earth's living habitat? Why or w ...

What is the difference between cis-acting elements and

What is the difference between cis-acting elements and trans-acting factors in the regulation of DNA?

What is one example of an organism that belongs to

What is one example of an organism that belongs to platyhelminthes?

The protein produced by huntingtons disease huntingtin

The protein produced by Huntington's disease (huntingtin) interferes with general transcription factor (called CBP) and prevents it from binding the promoter. CBP activates genes involved in cell survival. i) Which step ...

What are two ecosystems in the region where you live

What are two ecosystems in the region where you live (Southeastern US) where you live? What are some examples of intrinsic and instrumental values provided by the ecosystems?

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen