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Arada [10]
3 years ago
15

What event marked the end of the mesozoic era and the beginning of the cenozoic era

Biology
1 answer:
Elina [12.6K]3 years ago
4 0

An astroid impact killed off the dinosars which in turn made the first primates evolve.

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A population contains short plants and tall plants. The short plants are not able to conpete with tall plants for sunlight. The
Elis [28]

Stabilization Selection


In Stabilization Selection there is a decrease in the amount of variation. In the case of Stabilization Selection, selective pressures must select against two extremes of a particular trait. Two opposing selection pressures will combine to maintain a median height. Rather than resulting in extremely tall plants or extremely short plants, the majority of the plants in this population will be of medium height. Credit: Kalahira

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8 0
4 years ago
The genetic material inherited in an organelle, such as a mitochondrion or a chloroplast, exhibits _____ inheritance.
forsale [732]

The genetic material inherited in an organelle, such as a mitochondrion or a chloroplast, exhibits Extranuclear inheritance.

When DNA in cytoplasmic organelles is handed on to offspring, extranuclear inheritance occurs. Cytoplasm can be found in both sperm and ovum cells in humans. Most of the extranuclear DNA formed when the sperm and ovum combine belongs to the mother. The organelles in the fertilized cell expand and divide as the fertilized egg grows. As a result, each new cell receives mtDNA, which likewise divides and is passed on. As a result, each child inherits mtDNA from the mother. The identical procedure takes place in creatures with cells that contain chloroplasts.

Nuclear DNA differs greatly from extranuclear inheritance in several ways.

  1. Chloroplasts and mitochondria both store several copies of DNA. Additionally, the cytoplasm of every cell contains a number of each organelle, occasionally thousands.
  2. In a cell's cytoplasm, chloroplasts and mitochondria are dispersed at random. There is a random distribution of amount in both daughter cells after cell division, whether it be through mitosis or meiosis.

To learn more about inheritance visit the link:

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8 0
2 years ago
What is it called when the effect of one independent variable depends on the level of another independent variable?
Ronch [10]

Answer:

Interaction

Explanation:

6 0
3 years ago
Any electricity charged object crates an electric field.Walking across carpet In wool socks can create charge.This observation i
Naya [18.7K]

Answer:

The observation is an evidence of static electricity.

Explanation:

Static electricity refers to the stationary electric charge that is produced by friction. In other words, this kind of electricity is created when objects (2 objects for example) that are not good conductors of electricity are rubbed together.

During the rubbing process, electrons from the objects come in contact leading to the creation of a stationary electric charge. A good example of static electricity is when you are combing your hair and you see a spark in the mirror.

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3 years ago
PLEASE HELP!!!!
e-lub [12.9K]

The cell goes through 4 steps (prophase, metaphase, anaphase, and telophase.) The cells at the end of the process also have the same amount of chromosomes as the

6 0
3 years ago
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