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3 years ago

1. A cladogram begins with a common _____________ of all the organisms represented above.

2 answers:

6 0

Since you provided no answer choices, I will assume the correct answer choice is ANCESTOR. A cladogram begins with a common ancestor of all the organisms represented above.

Lena [83]3 years ago

3 0

<h2>Answer:</h2>

A cladogram begins with a common __<u>__Ancestor___</u>______ of all the organisms represented above.

Explanation:

A cladogram is a type of diagram which is used to show their relationship between some organisms on the basis of some structural feature.

It is not like phylogenetic tree which is used to show the evolutionary history and relationships between organisms.

In a cladogram, different organism are related to one organism which is known as ancestor and cladogram begins from here.

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When does the exponential growth of a population stop?

Maurinko [17]

Answer:

d or a im not completly sure

Explanation:

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What is the number of codons needed to make an amino acid

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You need three codons to make an amino acid.

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4 years ago

When a drug blocks reuptake or breakdown of a neurotransmitter by the action of enzymes, the drug is acting as an _____?

umka2103 [35]

<span>SNRI- Selective neurotransmitter reuptake inhibitor. Drugs that have use this mechanism of operation can increase the presence of the targeted neurotransmitter in a subject as more of the neurotransmitter remains freely available. This class of drugs is commonly used in the treatment of depression and other maladies where neurotransmitter levels can affect subject outcomes.</span>

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3 years ago

A woman with normal vision has a son. The woman’s maternal grandfather is color-blind. What is the probability that the son is c

Reptile [31]

Answer:

= $\frac{1}{4}$

Explanation:

Given that the woman’s maternal grandfather is color-blind, then it is possible that the woman is a carrier of color-blind allele.

Then probability that the woman is a carrier of color-blind allele is = $\frac{1}{2}$

So if a carrier woman cross with a normal man

Let say the gene of the carrier woman is: $XX^c$

and the normal man = $XY$

so if we have a cross between $XY$ and $XX^c$ ; we have:

$X$ $Y$

$X$ $XX$ $XY$

$X^c$ $XX^c$ $X^cY$

we can see the offspring to be :

$XX$ =normal unaffected female

$XY$ = normal unaffected male

$XX^c$ = carrier female for color-blind

$X^cY$ = carrier male for color-bind

Then probability that of inheriting defective allele = $\frac{2}{4}$ = $\frac{1}{2}$

Let's not forget that the probability that the woman is a carrier of color-blind allele is = $\frac{1}{2}$

∴ the probability that the son is colorblind = $\frac{1}{2}*\frac{1}{2}$

= $\frac{1}{4}$

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3 years ago

Since the beginning of the Solar system, all planets orbit or revolve around the barycenter of the solar system in a countercloc

Ksju [112]

Answer:

True

Explanation:

Barycenter is the center of mass of an object. Since the beginning all planets and sun have been revolving around their center of mass. This center of mass evidently is the center of the solar system . The satellite, planet and sun has been revolving and rotating in the counterclockwise around the barycenter as well as their axis

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3 years ago