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mote1985 [20]
3 years ago
8

What did the comparative study on chytridiomycosis teach scientists studying white-nose syndrome in bats?Select one:a. Humans we

re responsible for the spread of chytridiomycosis, but not white-nose syndrome.b. A novel fungal infection could spread to colonies and cause dramatic population crashes, as seen in the comparative study.c. Chytridiomycosis affected only certain amphibians, so the comparative study could not teach the scientists anything useful.d. White-nose syndrome affects bats but does not cause death in organisms like chytridiomycosis does in amphibians.e. It was probably not a fungal infection affecting the bats and scientists needed to look elsewhere for a cause.
Biology
1 answer:
Dvinal [7]3 years ago
7 0

Answer:. A novel fungal infection could spread to colonies and cause dramatic population crashes, as seen in the comparative study

Explanation:

fungal diseases of wildlife, amphibian chytridiomycosis and bat white-nose syndrome are diseases in bat that have emerged rapidly and unexpectedly over the past several decades.

These diseases have lead to unprecedented local and global decrease in population of amphibian and bat species the infection colonize their territory and pose serious threats to biodiversity and ecosystem stability due to loss of many of them.

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construct an explanation for the high incidence of tusklessness in the Gorongosa elephant population.
Setler79 [48]

Answer:

Argument: A trend toward an increased incidence of tusklessness will result in decreased population sizes in the

future.

Claim: In the long term, tusklessness in African elephants is not beneficial to populations, even when heavy

poaching is occurring. So, as tusklessness increases, elephant population sizes will decline.

Evidence: Although poachers kill elephants with tusks, elephants rely on their tusks for survival. Elephants use

their tusks to strip bark off trees for food and to dig up water and minerals from the ground. Male elephants

also use their tusks in competitions with other males for females.

Reasoning: Tuskless elephants are probably not as healthy as those with tusks, as they cannot eat bark off trees

and are unable to dig for water and minerals. During harsh conditions such as droughts, elephants without

tusks would be less likely to survive. Male elephants without tusks are also more likely to be injured during

mating competitions. If too many males are injured or killed, there may be a decline in reproduction.

Over time, many of the tuskless elephants will die or be unable to reproduce, so the population’s size will

decrease.

Explanation:

6 0
3 years ago
Hormones secreted by the Hypothalamus ____.
zvonat [6]
I'm pretty sure the correct answer is A).


I hope this helped! c:
4 0
3 years ago
Read 2 more answers
What is the correct order of genetic information found in a cell from Most Complex to Least Complex?
erastova [34]
D is the answer cause


A genome is an organism's complete set of DNA including all of its genes. Each genome contains all of the information needed to build and maintain that organism. This is the largest in the given options.
Chromosomes are the threadlike structures located inside the nucleus of animal and plant cells.
The building blocks of nucleic acids are the nucleotides.
A gene is the basic physical and functional unit of heredity. Genes are made up of DNA.
Thus, the correct answer is option (D), 'Genome, chromosome, gene, nucleotide'.
5 0
3 years ago
"Draw a pedigree for hitchhiker’s thumb. Your pedigree should cover at least two generations and include both dominant and reces
igor_vitrenko [27]

Answer and Explanation:

First, you need to know how to interpret a pedigree representation.

  • Family members

→ Individuals are represented with geometrical figures.

→ Males are squares

→ Females are circles

  • Trait/Phenotype

→ Healthy/normal/not affected  individuals are represented with empty figures

→ Affected/mutated individuals are represented with solid black figures

  • Generations

→ Each file is represented with a roman number, indicating the Generation.

 

Now, what we need to do is to draw a pedigree for a hitchhiker’s thumb. We know that this is an autosomal dominant trait, which we will represent with an H. No hitchhiker's thumb is the recessive trait, and it will be represented with an h.

Our pedigree should cover at least two generations and include both dominant and recessive forms of the trait.    

  1. We can cross two heterozygous individuals, Hh, who are the first generation in our pedigree.
  2. This cross will result in a woman and a man with No hitchhiker's thumb, another man with a hitchhiker's thumb, HH, and another woman with a hitchhiker's thumb, Hh. These individuals will represent the second generation in the pedigree.
  3. Finally, we can cross the man with No hitchhiker's thumb, hh, with a woman who does not have a hitchhiker's thumb either, hh. And the woman with a hitchhiker's thumb, Hh, with a man with a hitchhiker's thumb, HH. The result of these crosses will be the third generation.

The representation would be like following,

I → <u>First-generation:</u> First cross

  • Man Hh (1)  
  • Woman Hh (2)

II → <u>Second-Generation:</u> F1 and second crosses

  • Man hh (3)  x    Woman hh (4)
  • Woman hh (5)
  • Man HH (6)
  • Woman Hh  (7) x   Man HH (8)

III → <u>Third-Generation:</u>

  • A boy (9) and a girl (10) hh
  • A girl (11) HH

You will find this pedigree in the attached files. In this example, we included three generations. The first one belongs to the grandparents, the second one to parents, aunts/uncles, and the third one to grandchildren.  

If you draw another pedigree, remember to include

  • the figures representing males and females,
  • color and H/h representing the phenotype,
  • Roman numbers representing the generations, and optional, numbers naming each member.

5 0
3 years ago
In what era did single-celled organisms like bacteria form?<br><br> WORTH 20 POINTS
Fantom [35]

Answer:

3.5 billion years ago, or in the Eoarchean Era.

Explanation:

The first known single-celled organisms appeared on Earth about 3.5 billion years ago, roughly a billion years after Earth formed. More complex forms of life took longer to evolve, with the first multicellular animals not appearing until about 600 million years ago.

The earliest undisputed evidence of life on Earth dates at least from 3.5 billion years ago, during the Eoarchean Era.

Have a fantastic rest of your day!! \(^u^\)

8 0
3 years ago
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