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3 years ago

8

Which statement about all animals is false? Group of answer choices All animals are eukaryotes. All animals eat other organisms.

All animals are descended from a common ancestor. All animals have a dorsal nerve cord.

1 answer:

Ksju [112]3 years ago

8 0

Answer:

all animals have a dorsal cord

Explanation

not all animals are Verdebrey

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small group of 100 people decide to isolate themselves from the world and move to a small and remote deserted island. Out of thi

irina [24]

Answer:

Frequency of p $= 0.684$

Frequency of p $= 0.316$

Number of individuals with homozygous dominant (AA) $= 47$

Number of individuals with heterozygous (Aa) $= 43$

Number of individuals with homozygous recessive (aa) $= 10$

Explanation:

Out of 100 people, 10 have albino skin (aa)

So, the frequency of homozygous recessive individuals $(q^{2})$ is $\frac{10}{100} = 0.1$

Now, q will be

$= \sqrt{q^{2} } = \sqrt{0.1} \\= 0.316$

As per Hardy Weinberg's equation -

$p + q = 1$

Substituting the value of q in above equation, we get -

$p + 0.316 = 1p = 1 -0.316\\p = 0.684$

Now the frequency of homozygous dominant (AA) will be

$p^{2} = 0.684^{2} \\= 0.467$

Hence, out of 100 people $0.467 * 100 = 46.7 or 47$ people are homozygous dominant (AA)

Like wise out of 100 people $0.1 * 100 = 10$ people are homozygous recessive (aa)

As per As per Hardy Weinberg's equation-

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

Substituting the values in above equation, we get -

$0.467 + 0.316 + 2pq = 1\\2pq = 1 -( 0.467+ 0.1)\\2pq = 0.433$

So, out of 100 people $0.433 * 100 = 43.3 or 43$ people are heterozygous (Aa)

7 0

3 years ago

Learning that occurs when an organism makes a connection between two events is called _____.

antiseptic1488 [7]

Learning that occurs when an organism makes a connection between two events is called "Associative learning".<span>
The process involves associating various details or events to learn a particular fact or information. For example one cannot imagine one eye of his/her father, whenever he/she will imagine the whole face of their father will make sense to mind and not single eye.</span>

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3 years ago

How is Mimicry helpful to organisms? Explain and give an example.

sineoko [7]

Answer:

It helps them survive

Explanation:

Mimicry is when animals have forms and coloration that makes them blend in with their environment, which helps them to escape from their predators or approach their prey undetected and thus mimicry helps organisms survive. An example is the stick insect. They look like real sticks in shape and color and even move in a way that resembles a stick movement by the wind. This way they may escape the sharp vision of many insectivorous birds.

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3 years ago

Which change would best aid a farmer in making the transition from conventional farming techniques to more sustainable farming t

vekshin1

Answer:

The correct answer is - Rotate the types of crops grown.

Explanation:

Crop rotation is the practice of growing the different types of crops sequentially on the same field to improve nutrients in the soil for better soil health and helps in fighting pest and weed pressure.

Different crops required different nutrients and therefore, rotating crops helps to not exploiting the same nutrients again and again. Rotating crops also helps in removing weeds and pests as different weeds and different pests associate with different crops.

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3 years ago

What does the slope of this graph equal?

masha68 [24]

Answer:

speed

Explanation:

3 0

2 years ago

Read 2 more answers