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otez555 [7]
3 years ago
9

What effects does crossing over have on a chromosome?

Biology
2 answers:
Zarrin [17]3 years ago
8 0

Answer:

d

Explanation:

because

FinnZ [79.3K]3 years ago
7 0

Answer: crossing over allows for genetic variation

Explanation:

crossing over is the exchange of genes between two chromosomes which ends up resulting in non-identical chromatids that comprise the genetic material of gametes (sperm and eggs).

Basically crossing over makes the chromatids that are held together by a centromere, no longer identical to eachother which creates genetic variation.

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Which process allows organisms to use nitrogen based molecules
Maurinko [17]
Fixation
Nitrogen is converted from atmospheric nitrogen (N2) into usable forms, such as NO2-, in a process known as fixation. The majority of nitrogen is fixed by bacteria, most of which are symbiotic with plants. Recently fixed ammonia is then converted to biologically useful forms by specialized bacteria
6 0
3 years ago
Choose the correct answer to complete the sentence. The animal group classified as being the most critically endangered is the _
Volgvan

The best and most correct answer among the choices provided by your question is the fourth choice or letter D. Reptiles are the most critically endangered animal group. Their population is threatened due to illegal activities done by man like poaching. 

I hope my answer has come to your help. Thank you for posting your question here in Brainly.





4 0
3 years ago
Read 2 more answers
In grafting, the plant with the root system is called the , and the portion of the plant with the buds is called the .
RSB [31]
The plant with the root system is called the rootstock


the portion of the plant with the buds is called the scion
7 0
3 years ago
Read 2 more answers
Match each organelle with the correct function.
Arturiano [62]

Answer:

Explanation:

EUKARYOTIC CELL STRUCTURE

Unlike prokaryotic cells, eukaryotic cells have several membrane-bound organelles. The mitochondria convert chemical energy from food into ATP, which is used to power all cell activities. The number of mitochondrion in a cell is determined by the cell's function. Muscle cells require a lot of energy, so they contain many mitochondria. The endoplasmic reticulum (ER) is a packaging and storage facility. Rough ER contains ribosomes and is responsible for protein synthesis. Smooth ER lacks ribosomes. It is responsible for the production and storage of lipids and steroids, as well as the storage of calcium ions. The Golgi body works with the ER to create complex molecules. In animal cells, the Golgi body also creates the lysosomes that break down food and cell waste.

Like animal cells, plant cells have mitochondria, rough and smooth ER, Golgi bodies, nuclei, and cell membranes. Unlike animal cells, plant cells do not have lysosomes. They also contain two unique organelles – cell walls and chloroplasts. The main function of a cell wall is structure and support. The primary job of chloroplasts is photosynthesis. These organelles contain chlorophyll, which traps solar energy. Plant cells also have a large central vacuole that stores water and helps the cell maintain its shape.

7 0
3 years ago
Biomechanists typically work in all of the following settings except
swat32

Answer:

a nutrition facility that targets women

Explanation:

It should be noted that biomechanics is known to be the study of movement, most especially in biological system. And the person involved in this study is being referred to as a biomechanists.

It should be understood that the major role of the biomechanist is to make use of the knowledge or principles acquired, that is, the principles of  physical mechanics in combination with those of biology , in order to understand how people move, how they can move more effectively, why they sometimes get injured and how to reduce the incidence of injury.

in this case, they are not expected in a nutrition facility that targets women.

5 0
3 years ago
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