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lara [203]
4 years ago
5

What is the Purpose/Function of the Chorion in mammals?

Biology
1 answer:
amm18124 years ago
3 0
It develops from an outer fold on the surface of the yolk sac<span>, which lies outside the </span>vitteline envelope<span> and is developed by the </span>follicle cells<span> while the </span>egg<span> is in the </span>ovary<span>.</span>
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Which of the following is a use for a weather radar? a. forecasting weather b. preventing precipitation c. measuring rainfall d.
vredina [299]

forecasting the weather

7 0
3 years ago
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Which B.F. Skinner invention allowed him to train subjects through operant conditioning?
Bezzdna [24]

Answer:

A: Cumulative recorder

Explanation:

B. F. Skinner was a psychologist, author, behaviorist and inventor of Operant conditioning chamber and Cumulative recorder.  The purpose of cumulative recorder was to study the rate of operant conditioning. It is a process in which behavior of an organism is modified or an organism is conditioned to perform a specific behavior through giving punishment or reward.

For example: We teach a kid that he should not touch a hot stove because it will burn his hands, or we give him a box of candies to perform a specific task or behave in a certain way. Skinner used Cumulative recorder to find the effect of certain factors on behavior or response of an organism For example: the rate at which lever was pressed by a monkey to get bananas etc.

Hope it helps!

6 0
3 years ago
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Please explain the difference between a frameshift mutation and a base substitution mutation.
harina [27]

Answer:

A frameshift changes every codon past it. A base substitution only changes one codon.

Explanation:

DNA is comprised of nucleotides (A, C, T, G) that make up amino acids. Every three bases is called a codon and represents an amino acid.

In a frameshift mutation, a nucleotide is either added or deleted from the sequence. This offsets the entire sequence after it because the reading frame shifts. Here's an example:

ACTGCTATCGTCATC

If another T is added in between the first and second codons, then every codon after will be changed.

ACT>T<GCTATCGTCATC

A substitution mutation is usually less severe, as it only alters one codon in the sequence. These occur when one nucleotide is replaced by another one. Here's an example:

ACTGCTATCGTCATC

Let's say the first G is replaced by a T.

ACT>T<CTATCGTCATC

As you can see, none of the other codons changed.

Typically, a frameshift mutation is considered worse than a substitution mutation.

7 0
3 years ago
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What could be the possible result of founder effect on genetic variation
puteri [66]

Loss of genetic variation.

Hope this helps!

-Payshence

6 0
3 years ago
The class of disorders marked by extreme and inflexible characteristics that often cause impaired social and occupational functi
Inessa05 [86]

Answer:

Personality.

Explanation:

The mental disorders affects the thinking ability of the individual. The mental disorder individual shows abnormal behavior in the society and might feel anxiety or feel awkward among the people.

The personality disorder is a type of the mental disorder in which the individual have unhealthy thinking level. This disorder affects the social status and his personality in the society. The occupational functioning become improper and requires the proper medical treatment.

Thus, the answer is personality.  

4 0
3 years ago
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