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Rasek [7]
3 years ago
13

The two letters that refer to an organism's genetic makeup is the ?

Biology
1 answer:
postnew [5]3 years ago
8 0

Answer:

X and Y

Explanation:

Females are usually XX and Males are Ususally XY.

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Explain the benefits of animals working together in groups.
guapka [62]

Answer:

Explanation:

they are able to get things done more effectively and faster. for example wolves will hunt in packs so that they are able to take down prey that they would not normally be able to alone, like a deer or a moose.

6 0
3 years ago
Texto donde se desarrolle la definicion de seleccion natural. Además, empleem los siguientes terminos: Variabilidad, mecanismo s
SOVA2 [1]

Answer:

la selección natural es el mecanismo principal por el cual la evolución ocurre

Explanation:

Charles Darwin fue un naturalista inglés que propuso la teoría de la evolución o 'descendencia con modificación' mediante el mecanismo de selección natural. Acorde a esta teoría, la selección natural se define como el mecanismo selectivo de reproducción diferencial de los individuos mejor adaptados a su ambiente. La variabilidad es el la materia prima sobre la cual la selección natural actúa, seleccionado aquellos individuos que presentan combinaciones fenotípicas y genotípicas más adaptadas para sobrevivir en un ambiente en particular. Los individuos de una población que son 'superiores adaptativamente' poseen más chances de sobrevivir y reproducirse, y por lo tanto tienen también más probabilidades de transmitir sus genes a la siguiente generación.

8 0
3 years ago
What differences between physical and chemical barriers​
Step2247 [10]

Answer:

Mechanical barriers — which include the skin , mucous membranes , and fluids such as tears and urine — physically block pathogens from entering the body. Chemical barriers — such as enzymes in sweat , saliva , and semen — kill pathogens on body surfaces.

5 0
2 years ago
Read 2 more answers
Tropical rainforest, temperate deciduous forest, and boreal forest (also called the taiga)
lorasvet [3.4K]
<span>Characteristics that mentioned biomes have in common are:
- They are all forests, dominated by trees and other woody vegetation.
- They inhabit animal life with great microbial diversity.
- They all have big carbon sinks.

Still, trees different in a number of ways in these three biomes:
- </span><span>Tropical rainforest: Trees are evergreen and have large green leaves. Canopy is multilayered and dense, so there is a little light in the forests.
- </span><span>Temperate deciduous forest: Trees are deciduous, leaves are lost annually. Canopy is moderately dense, so there is more light than in tropical rainforests.
- </span><span>Boreal forest: Trees are evergreen conifers with needle-like leaves. Canopy is thick and permits low light penetration.</span>
3 0
3 years ago
A fish that normally lives in salty water is placed in a tank containing fresh water. What do you think will happen to the cells
Lapatulllka [165]
They will be clean from all salt because the new water contains no salt 
3 0
3 years ago
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