answer.
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
Nezavi [6.7K]
2 years ago
15

The upper forelimbs of humans and bats have fairly similar skeletal structures, whereas the corresponding bones in whales have v

ery different shapes and proportions. However, genetic data suggest that all three kinds of organisms diverged from a common ancestor at about the same time. a. Forelimb evolution was adaptive in people and bats, but not in whales. b. Natural selection in an aquatic environment resulted in significant changes to whale forelimb anatomy. c. Genes mutate faster in whales than in humans or bats. d. Whales are not properly classified as mammals
Biology
1 answer:
olya-2409 [2.1K]2 years ago
8 0

Answer: Option B

Explanation:

The upper forelimbs of human beings and bats have similar skeletal structures but the same structure has resulted differently in whales.

This is because the natural selection in whales has resulted in change in anatomy and this change in whales has changed their anatomy.

The forelimbs of whales has changed into flippers and it helps whales in swimming.

The forelimbs of human beings, whales and bats have the common ancestors but because of different environment they evolved differently.  

You might be interested in
Loss of biodiversity matters not only with regard to mammals or other vertebrates, but also microbes. What statement below would
Romashka [77]

Answer:

B. Microbes may produce unique proteins useful in genetic research

Explanation:

Biodiversity refers to the diversity of living beings present on Earth. The biodiversity is a very important component of the ecosystem as these living organisms are interlinked with each other. Therefore, the loss of biodiversity will affect the ecosystem.

When we look at the biodiversity a layman considers the living organisms which can be seen with eyes but the diversity also exists at the level of the micro-organisms.

The man-made activities are not only harming the macroscopic but also microscopic organisms. The microbes play an important role in our life like these days they are used by the scientific community to study the genetic and related fields like molecular biology. The microbes produce proteins that are consumed by humans.

Thus, Option-B is correct.

8 0
2 years ago
A thin flexible semipermeable barrier around the cell which regulates what enters and leaves the cell
AnnyKZ [126]

That is the cell membrane. Think of it as a gate around a city, that is how I remember it. The city is the cell, and the cell membrane is the gate that "protects" the city, and controls what can enter and exit.


8 0
2 years ago
Read 2 more answers
Which of the following is a feature of exocytosis but not endocytosis?
OLEGan [10]
<span>A. Shape changes of a membrane</span>
8 0
2 years ago
Contrast the different ways bromeliads and pitcher plants acquire nutrients from animal sources. NOT COMPARE.
dezoksy [38]
<span>Bromeliads are an example of mutualism where they create mini-ecosystems that house other small animals by collecting rainwater in their leaves. The bromeliad benefits from the nutrients when these organisms decompose when they die. Unlike the Pitcher plants which are predators, they actively trap insects and other small animals in their pitchers.
</span>
3 0
2 years ago
Yanni made a chart to compare the strong and weak forces. Which best describes Yanni’s error? Only the weak force is active in t
cluponka [151]

Answer: Option (d) is the correct answer.

Explanation:

Nucleus of an atom consists of protons and neutrons. Protons are positively charged and neutrons have no charge. So, due to the like charges of protons there occurs electrostatic force of repulsion inside the nucleus of the atom.

But due to similar number of neutrons and protons a force that is able to bind both of them together is known as strong nuclear binding energy.

This force is strong enough that it is able to overcome electrostatic force of repulsion. But when there is great difference in the number of protons and neutrons then binding force is not strong enough.

Hence, the atom becomes unstable and undergoes radioactive decay. So, this means weak forces are responsible for radioactive decay.

Thus, we can conclude that the statement which best describes Yanni’s error is that the strong force is responsible for radioactive decay.

8 0
2 years ago
Read 2 more answers
Other questions:
  • A scientist conducting an experiment quickly saw that she was not getting the results she expected. Instead of continuing to col
    6·2 answers
  • What is the significance of an eyespot in the cell of Euglena?
    5·1 answer
  • Carbon dioxide crosses the plasma membrane by simple diffusion. the rate at which carbon dioxide enters the cell is determined b
    7·1 answer
  • Standing still in an elevator that suddenly lowers will stimulate receptors in the
    13·2 answers
  • In which biome would you most likely find plants that grow far apart from one another, with narrow leaves and shallow roots? Why
    15·2 answers
  • Arrange the events in the order they would have occurred according to the theory of endosymbiosis.
    6·1 answer
  • Which of the following is NOT TRUE about Titan?
    12·2 answers
  • Students performed an experiment using eggs to observe the effect of osmosis on cells. The egg represented a typical cell. Befor
    6·2 answers
  • Select from the drop-down menu the best answer for each question. Which specialized organelle is shown? What molecule that captu
    11·2 answers
  • Classify each action as belonging to genetics, genomics, or both. Genetics Genomics Both.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!