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3 years ago

Which characterizes speciation in new areas, such as a recently formed island

1 answer:

6 0

Allopactric speciation on island archipelagos. As the organisms move from island to island, rapid speciation is observed because of difference in resource procurement more than just variation in environment. Once these populations adapt to the environment, speciation rapidly occurs.

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Match the organ or gland with the enzymes or secretions it releases. amylase peptidase lipase HCl bile A. pancreas B. small inte

timama [110]

Answer:

Amylase- alpha amylase in salivary glands and pancreatic amylase in pancreas

peptidase - stomach (chief cells)

lipase - pancreas

HCl - (parietal cells)

bile - liver

Explanation:

Alpha-amylase which is an enzyme also known as ptyalin is produced in the salivary gland and found in the saliva helping in the first step in the hydrolysis of starch. The leftover starch molecules are further broken down by the pancreatic amylase produced in the pancreas. Peptidase is secreted in the chief cells of the stomach and they catalyze the breakdown of proteins into smaller polypeptides or single amino acids. Lipase is produced from the pancreas and converts fats to fatty acids. HCl also produced in the stomach aids in the process of digestion in the stomach. Bile produced by the liver is involved in the emulsification of fats.

5 0

3 years ago

An autosomal recessive disease has an incidence of 1/10,000. What is the approximate frequency of heterozygote carriers for this

goblinko [34]

Answer:

Option B

Explanation:

Given

Number of incidences or frequency of an autosomal recessive disease $= \frac{1}{10000}$

As per Hardy Weinberg's equation, frequency of a recessive genotype is $q^{2}$

$q = \sqrt{\frac{1}{10000} }\\ q = \frac{1}{100}$

As per first equation of Hardy Weinberg's -

$p+q=1$

so ,

$p = 1-q\\p = 1-\frac{1}{100}\\p = \frac{99}{100}$

$p^2 = (\frac{99}{100})^2\\p^2 =\frac{9801}{1000}$

As per second equation of Hardy Weinberg's -

$p^{2} + q^{2} + 2pq=1$

Substituting the given values in above equation, we get -

$\frac{9801}{10000} + \frac{1}{100} + 2pq=1\\2pq = 1-(\frac{9801}{10000} + \frac{1}{100})\\2pq = 0.99%\\OR[tex]2pq=1$ %

$2pq = \frac{1}{100}$

Hence, option B is correct.

8 0

3 years ago

Which of the following describes the best strategy for preventing an increase in the size of the Great Pacific Garbage Patch?

artcher [175]

less littering or more cleanup let me know if this helpful please

8 0

3 years ago

What is the purpose of the replication

stepan [7]

The purpose of the replication bubble is that it forms where replication is taking place (option A).

<h3>What is replication?</h3>

Replication is the process of producing replicas or duplicate of DNA or RNA molecules.

DNA replication is a very important process that occurs prior to cell division. During replication, the double stranded DNA is separated into two single strands.

Each copy called the leading and lagging strand becomes the template for the synthesis of new DNA strands.

However, a structure called replication bubble is a formed during the separation of two DNA strands by the helicase enzymes.

Therefore, the purpose of the replication bubble is that it forms where replication is taking place.

Learn more about replication at: brainly.com/question/16464230

#SPJ1

8 0

2 years ago

Please help with this science question

LenKa [72]

Answer:

I'm pretty sure the answer is C. Physical weathering

Explanation:

sorry if it's not :(

4 0

3 years ago