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Elanso [62]
2 years ago
11

How are the nervous systems of a flatworm and a fish different?

Biology
1 answer:
Karolina [17]2 years ago
4 0

Answer:A flatworm has a simple nervous system with two nerve cords running down both of its sides. ... While a fish's nervous system is comprised of a central brain and a spinal cord along with many branching nerves, which allows them to sense things around them

Explanation:

A flatworm has a very mild nervous system with pair nerve cords moving down each side. It has two single brains called ganglia, which are pure packages of nerves. ... Fish have extremely advanced nervous systems organized around a brain.

brainliest?

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8. In a population of beetles, there is a gene for color with two codominant alleles. The allele R leads to red beetles and the
Eddi Din [679]

Answer:

The genotypic frequency = 1:1

The phenotypic frequency = 1:1

Explanation:

Given that:

The allele → R = Red beetles

The allele → B = Blue beetles

Since the gene color shows a codominant allele

The Red Beetle = RR

The blue beetles will be = BB

The heterozygous beetle will be = RB

∴

The punnet square showing the crossing of RB × RR is:

                R                   B

R                RR               RB

R                RR               RB

The result shows that we have two red beetles and two heterozygous beetles.

Hence;

The genotypic frequency = 1:1

The phenotypic frequency = 1:1

8 0
3 years ago
What occurs during the transition from stage A to stage B in figure 2?
Sunny_sXe [5.5K]

Answer:

A

Explanation:

3 0
3 years ago
Mark received one dominant allele for brown hair from his father and another dominant allele from his mother.
KIM [24]

Answer:

homozygous

Explanation:

when an individual both copies of a given gene have the same allele

4 0
3 years ago
If you need help friend me 4th-7th grade
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3 years ago
What causes the doldrums to be calm winds?
arlik [135]

Earth revolves around the sun, keeping doldrums stationary causes the doldrums to be calm winds. Thus, the correct option is C.

<h3>Why are the doldrums so calm?</h3>

The Intertropical Convergence Zone, also known as the doldrums or calms by sailors due to its constant lack of wind, is the area where the northeast and southeast trade winds meet. It encircles the Earth near the thermal equator, however its exact location changes with the seasons.

The sunlight beams down directly on the area around the equator, the Doldrums are caused by solar radiation from the sun. Instead of blowing horizontally, this heating causes the air to warm and climb straight up. As a result, there is little or no wind for weeks at a time.

For more information regarding doldrums, visit:

brainly.com/question/11949746

#SPJ1

3 0
2 years ago
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