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Marrrta [24]
3 years ago
12

List ways that natural selection, genetic variants, and environmental factors contribute to evolution

Biology
1 answer:
s344n2d4d5 [400]3 years ago
4 0

Genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring
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In which part of the human respiratory system does actual oxygen exchange take place?
lozanna [386]
The alveoli. These little air sacs are found on the end of the bronchioles and are the place where oxygen enters the blood and the carbon dioxide leaves. 


7 0
3 years ago
What is a triacylglycerol ? Discuss the advantages of organisms having triacylglycerol as energy storage molecule?
Sergeeva-Olga [200]

Answer:

Triacylglycerols are acylglycerols with three fatty acid molecules, generally long chain, which can be the same or different; we speak of simple triacylglycerols when there is the same fatty acid in all three glycerol positions, but most are mixed triacylglycerols, with at least two different fatty acids. The properties of triacylglycerols will depend on the type of fatty acids they contain.

Most of the fats and oils of both animal origin (tallow, butter) and vegetable (olive, corn, sunflower, palm, and coconut oils) are formed almost exclusively by triacylglycerols.

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5 0
3 years ago
describe two alternative photosynthesis pathways found in plants suggest how how these adaptions might help plants
klio [65]

a. Sugar cane, corn, carbgrass which are identified as C4 Plants allow fixation of carbon dioxide into four carbon compounds. This happens during the  hottest time of the day - their so-called stomata gets partially closed. C4 plants have been identified to lose only half of the water that C3 plants lose when they produce the similar amount of carbs.

<span>b.CAM PATHWAY - Plants such as pineapples and cactus have different approach to adapting heat. Carbon is fixed through a cam pathway. They use it to open their stomata at night and close it in the morning.</span>

4 0
2 years ago
Which of these sentences characterizes the regulatory mechanisms of gene expressions in organisms?
scZoUnD [109]
<span>According to a source the answer is B. They save energy and metabolites and help the organisms to respond to the environmental changes.

</span>A genotype is a set of genes in the human DNA responsible for different traits. It represents your complete identity that you will inherit from your parents and ancestors.
<span>On the other hand, a phenotype is how that trait expresses physically, a characteristic, a visible description of your physical features, including height, eye color, overall health, history of diseases, the ability to gain or lose weight fast, what type of food you like, what you enjoy and what you hate. </span>
5 0
3 years ago
1) if new individuals with different colors migrated into your ecosystem, what would the effect be on the community if the ecosy
prohojiy [21]
Since there environment changed there will be new predators.
 pls give me brainliest

8 0
3 years ago
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