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Wewaii [24]
3 years ago
11

All human body cells contain 46 chromosomes. However, sperm cells in men and egg cells in women have only 23 chromosomes. This i

s due to meiosis. How does meiosis accomplish the reduction in chromosomal number?
Biology
1 answer:
Daniel [21]3 years ago
5 0

Answer:

Two cell divisions after DNA replication

Explanation:

After the DNA is replicated, the cell undergoes two rounds of meiosis to produce 4 cells, each wIth 23 chromosomes. This is how the cell goes from a diploid to a haploid state.

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Earth tilt the sun radiation to strike the hemispheres at different
STatiana [176]

The seasons are caused as the Earth, tilted on its axis, travels in a loop around the Sun each year. Summer happens in the hemisphere tilted towards the Sun, and winter happens in the hemisphere tilted away from the Sun. As the Earth travels around the Sun, the hemisphere that is tilted towards or away from the Sun changes.


6 0
3 years ago
What traits and trends characterize the primate lineage? Explain.
jenyasd209 [6]

Answer:

  • Hands and feet with 5 fingers
  • Generalized skeleton
  • Large brain

Explanation:

The order primate holds 300 or more species including monkeys, humans, gorillas, chimpanzees among others. The species included in this order share anatomic and functional characteristics such as:

  • Hands and feet with 5 fingers and opposable thumbs, for grabbing, holding a grip for a better arboreal lifestyle. Even though in some species such as humans these opposable thumbs in feet don't longer exist.
  • Plantigrade feet, which means that the toes and metatarsals are flat on the ground while walking.
  • Collarbone or clavicle present.
  • Nails instead of claws in the large majority of species.
  • Color vision.
  • Two brain hemispheres well developed, for special traits like social behaviors and better eye-hand coordination among others.

.

6 0
3 years ago
What are the many forms of energy? how is energy either potential of kinetic
Alex Ar [27]

Answer:

The different types of energy include thermal energy, radiant energy, chemical energy, nuclear energy, electrical energy, motion energy, sound energy, elastic energy and gravitational energy.

You need energy to do any work, which is why the ability to do any work is energy. Read that again. Potential and kinetic energy are two forms of energy that can be converted into each other. Potential energy can be converted to kinetic energy and vice versa.

Explanation:

6 0
3 years ago
Can planes fly in the mesosphere ? why or why not ?
Nikitich [7]

Answer:

No

Explanation:

It is because of the air it will crush it.

4 0
3 years ago
Read 2 more answers
When air gets warm does it sink or rise?
stiv31 [10]
Air rises when it is warmer
4 0
3 years ago
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