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
Blababa [14]
4 years ago
5

Two parents with a normal characteristics have a child bourn with cystic fibrosis. Explain as fully as you can how this can happ

en
Biology
1 answer:
Reptile [31]4 years ago
4 0
This can happen when the parents both have a recessive gene for cystic fibrosis.
You might be interested in
Leon made a study chart about human-induced changes to the environment.
snow_lady [41]

Answer:

4 answer

Explanation:

because my little cousin said so

8 0
3 years ago
In gymnosperms, the seed coat develops from the integument. in angiosperms, the seed coat develops from the __________.
Licemer1 [7]
<span>In gymnosperms, the seed coat develops from the integument. in angiosperms, the seed coat develops from the </span>integuments.
3 0
3 years ago
Explain how scientific investigations that preceded Lamarck , contributed to the development of his theory of evolution
mihalych1998 [28]
Lamarck developed the theory of acquired characteristics that organisms changed during their lifetime to accommodate their environment and that these acquired characteristics became inherited in their offspring. This theory was preceded for example by Erasmus Darwin who believed that "improvements" to organisms could be passed on or inherited.
3 0
4 years ago
Read 2 more answers
30POINTS AND BRAINLEST
SCORPION-xisa [38]

Answer:

We are losing Earth's greatest biological treasures just as we are beginning to appreciate their true value. Rainforests once covered 14% of the earth's land surface; now they cover a mere 6% and experts estimate that the last remaining rainforests could be consumed in less than 40 years.

One and one-half acres of rainforest are lost every second with tragic consequences for both developing and industrial countries.

Rainforests are being destroyed because the value of rainforest land is perceived as only the value of its timber by short-sighted governments, multi-national logging companies, and land owners.

Nearly half of the world's species of plants, animals and microorganisms will be destroyed or severely threatened over the next quarter century due to rainforest deforestation.

Experts estimates that we are losing 137 plant, animal and insect species every single day due to rainforest deforestation. That equates to 50,000 species a year. As the rainforest species disappear, so do many possible cures for life-threatening diseases. Currently, 121 prescription drugs sold worldwide come from plant-derived sources. While 25% of Western pharmaceuticals are derived from rainforest ingredients, less that 1% of these tropical trees and plants have been tested by scientists.

Most rainforests are cleared by chainsaws, bulldozers and fires for its timber value and then are followed by farming and ranching operations, even by world giants like Mitsubishi Corporation, Georgia Pacific, Texaco and Unocal.

There were an estimated ten million Indians living in the Amazonian Rainforest five centuries ago. Today there are less than 200,000.

In Brazil alone, European colonists have destroyed more than 90 indigenous tribes since the 1900's. With them have gone centuries of accumulated knowledge of the medicinal value of rainforest species. As their homelands continue to be destroyed by deforestation, rainforest peoples are also disappearing.

Most medicine men and shamans remaining in the Rainforests today are 70 years old or more. Each time a rainforest medicine man dies, it is as if a library has burned down.

When a medicine man dies without passing his arts on to the next generation, the tribe and the world loses thousands of years of irreplaceable knowledge about medicinal plants.

Explanation:

5 0
3 years ago
Q6.2. There are many diseases that do not infect a person more than once, such as chicken pox
Vilka [71]

The responsible for this lifetime immunity is the acquired immune response because antibodies are developed from previous infections. The generation of antibodies is a response to these infections.

The acquired immune system eliminates pathogenic organisms and any toxic molecules they produce.

The acquired immune system has two mechanisms of action: humoral immunity and cellular immunity.

Humoral immunity, also known as antibody-mediated immunity, involves the activation of specific blood cells (B cells) and subsequent secretion of antibodies when in contact with a pathogen.

Thus, the acquired immune system develops specific antibodies as a response to infections (e.g., chickenpox and measles).

Learn more in:

brainly.com/question/1379924?referrer=searchResults

3 0
3 years ago
Other questions:
  • Which would be most effective in reducing indoor air pollution in an environment high in volatile organics (VOCs)? A) cover the
    9·1 answer
  • An antimicrobial compound that targets a pathway or structure that is present in a pathogen but not in the host exhibits _______
    14·2 answers
  • Particles may diffuse through all of the following except _______ ?
    15·2 answers
  • What would happen if heat were not trapped in Earth’s atmosphere?
    11·2 answers
  • The area or kind of community that would have the highest portion of the species reproducing by asexual means is a: a) tropical
    10·1 answer
  • 18) Do all bacterial cells have this circular DNA? Explain.
    14·1 answer
  • Which statement best describes the role of DNA in relation to RNA and proteins?
    14·2 answers
  • Describe three methods by which the reproductive behavior of individuals can affect the growth rate of a population
    14·1 answer
  • The diagram shows that the boiling point of water is 100°C Soiting point A How could you reduce the boiling point of water in th
    11·1 answer
  • The development of vascular tissues helped plants become more successful
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!