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mezya [45]
3 years ago
10

Why are cane toads in Australia considered an invasive species rather than simply nonnative?

Biology
2 answers:
Yuki888 [10]3 years ago
7 0

Answer: A.) They are destructive to native species and have no natural predators.  

An invasive species is a species which when introduced or immigrated to a new ecosystem compete with the native species for resources as a consequence, this species is responsible from elimination, extinction and migration of native species living in an ecosystem. Cane toads in Australia are considered as an invasive species rather than simply nonnative because they are destructive to native species and have no natural predators.  

Andrej [43]3 years ago
3 0
 <span>Cane toads in Australia are considered invasive species rather than simply nonnative because: They are destructive to native species and have no natural predators.</span>
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Daniel and nellie are hoping to maximize nellie's chances of becoming pregnant. when should they have intercourse?
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In humans, Rh-positive individuals have the Rh antigen on their red blood cells, while Rh-negative individuals do not. If the Rh
bixtya [17]

Answer: 60%

Explanation:

In population genetics, the Hardy-Weinberg Principle states that the genetic composition of a population remains in equilibrium as long as no natural selection or other factors are active and no mutations occur.

The frequencies of the genotypes of an individual locus will be set to a particular equilibrium value.<u> It also specifies that these equilibrium frequencies can be represented as a simple function of the allelic frequencies at that locus</u>. In the simplest case, with a locus with two alleles A and a, with allele frequencies of p and q respectively, the principle predicts that <u>the genotypic frequency for the dominant homozygous AA is p^2, that of the heterozygous Aa is 2pq and that of the recessive homozygous aa, is q^2. The allele frequency of a is represented as p and the frequency of recessive allele is q.</u>

The three genotypes AA : Aa : aa appear in a ratio p² : 2pq : q². If we add them up, we get the unit:

p^2 + 2pq + q^2 = (p + q)^2 = 1  

And p + q = 1

<u>Rh-positive genotypes are represented as AA (homozygous dominant) or Aa (heterozygous) since the presence of a single dominant allele is sufficient to express the phenotype. While Rh-negative genotypes are represented as aa. </u>

If 84% of the population is Rh-positive, that means that this percentage includes all those who are AA and Aa. Then 16% are aa.

F(aa)=q^2=0.16

then F(a)=q=0.4

And since p + q = 1, p + 0.4 = 1, then p is 0.6

We can also calculate the rest, then F(AA)=p^2= 0.36

So F(Aa)= 2pq = 2 x 0.6 x 0.4 = 0.48

Notice that 0.36 + 0.16 + 0.48 = 1

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2 years ago
How did galileo find mountains on the moon?
bixtya [17]
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5 0
2 years ago
What are some everyday things that you take for granted that might be difficult
Makovka662 [10]

Answer: your hight because some people with prgeria cant grow the average hight.

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Cancer cells are less likely than normal cells to undergo _______, or programmed cell death.
laila [671]

Cancer cells are less likely than normal cells to undergo _apoptosis______, or programmed cell death.

Apoptosis is synonymous to programmed cell death

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Programed cells death of the cell is required to maintain proper tissue homeostasis. Examples of when apoptosis is necessary are when a cell may have errors in its DNA replication process. Apoptosis ensures the cell does not continue dividing and generating cells with the error. Other forms of damage to a cell that is hard to repair  also require that the cell undergo apoptosis.

In cancer cells, apoptosis pathway faulted and even when cells are required to undergo programmed cell death, such as in the case when lethal mutations occur, the cell continues to divide creating many cells that have the defect. This is what creates cancer tumors,

Learn More:

For more on cancer check out;

brainly.com/question/11710623

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#LearnWithBrainly

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