1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Kitty [74]
3 years ago
12

The species diversity of an evolutionary lineage will increase when more new member species originate than are lost to extinctio

n. In this hypothetical example, by 2 million years ago, both lineage A and lineage B have given rise to four species, and no species have become extinct (denoted by a dagger symbol). By time 0, however, lineage A contains only one species while lineage B contains eight species. Part A Consider the period from 2 million years ago to time 0. For lineage A, how many speciation and extinction events occurred from 2 million years ago to time?
Biology
1 answer:
lesantik [10]3 years ago
5 0

Answer:

A. 2 speciation events and 5 extinctions

B. 5 speciation events and 1 extinction

Explanation:

As we can see from the diagram, there were only 2 ,aim speciation events for lineage A. The extinction events were 5 for the A lineage. Hence, as the extinction event was more rapid than the speciation event so lineage A contains only one species.

On the other hand, the diagram shows that for lineage B there were 5 speciation events and just 1 extinction event. Hence, the number of species in lineage B were more at the time zero as just one extinction had occurred.

You might be interested in
During the g2 phase, the cell is preparing for mitosis. using your knowledge of cellular organelles and molecules, which molecul
jekas [21]
<span>tubulin, the microtubule protein</span>
3 0
3 years ago
4.<br> Which is not a major mineral group?
ddd [48]
The correct answer should be: Bromide
4 0
3 years ago
According to Kinsey's sexual behavior study, approximately
Sati [7]

According to Kinsey's sexual behavior study, approximately 21 percent of men and  6 percent of women had sexual intercourse by the age of 16. (Please mark me brainliest! thank you in advance!!)

7 0
2 years ago
*by my profile its actually not biology cause it didn'*t have science subject*
LuckyWell [14K]

Answer:

A. When two tectonic plates start to push into each other they can rise up and build mountains, or sink under and create deep valleys.

Explanation:

It is true

5 0
3 years ago
viruses are considered to be nonliving.how are viruses similar to living organisms?how are they different?
solmaris [256]
Similar: They are made by proteins and glycoproteins like all the cells are. The also have DNA or RNA to reproduce and they also evolve to adapt.

Difference: They don't use the cell division phase and they are not alive.
4 0
3 years ago
Other questions:
  • how do roller coaster engineers and park safety manager address the excessive G- forces exerted by roller coaster on its riders?
    11·1 answer
  • The air component in soil provides plants with the___ needed for photosynthesis
    9·2 answers
  • A scientist makes an image of all of a person's chromosomes. What technique is she using?
    14·2 answers
  • If you disagree with a point a discussion partner is making, it is usually a good idea to:
    10·2 answers
  • When you walk your dog you are using energy from the sunlight to power this activity .Explain
    13·1 answer
  • Specialist in the genitourinary system of males and the urinary system of females
    15·1 answer
  • Chemical reaction equations, such as the one for photosynthesis, show the reactants and products of a reaction. How does this si
    11·2 answers
  • A new species of living thing is discovered. The cell theory states that which of the following must be true about this new livi
    6·1 answer
  • 1. Animals are _____ and hence they depend on other organisms (plants and other
    12·1 answer
  • 4. What is catalase?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!