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Drupady [299]
3 years ago
12

Ultra violet radiation

Biology
1 answer:
topjm [15]3 years ago
7 0
Mutagens- vectors are things that carry diseases (e.g mosquitoes), pathogens are just germs and bacteria, agents are things which cause changes, whereas Mutagens are agents which cause genetic mutations
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Why is grass and most leafs and stems green
bija089 [108]

Leaves and grass serve to collect energy from the sun, through photosynthesis. Chlorophyll in the leaf gives the grass its green color.

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Are humans influencing global climate change?
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<span>Evidence that human activities influence the global climate system continues to accumulate. Data indicate that Earth's surface temperature is rising. This increase can be attributed, in part, to human-caused increases in greenhouse gases such as carbon dioxide. It is becoming apparent that these climatic changes are negatively affecting physical and biological systems worldwide.</span>
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3 years ago
Plants are defined by what main characteristics?
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Plants have a cell wall composed of cellulose, chloroplasts, and a large central water-filled vacuole.
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4 years ago
Sex-Related inheritance: X chromosome; Non Sex-Related inheritance​
ser-zykov [4K]

<u>What we already know:</u>

All species under normal circumstances will have two sex chromosomes. X and Y, Y is known to be dominant. All females will have two X chromosomes (XX, one X will always be given by the mother), whereas males will have one Y chromosome and one X chromosome (XY, one X will always be given by the mother. The father, on the other hand, could give either an X or a Y, that all depends on what sex chromosome the father's sperm donated.)

<em>So, how many chromosomes do a typical human have? Correct, a typical human has 32 chromosomes and only 2 of them are sex chromosomes. Now we must understand that the sex chromosome carries more than just the one code for the individual sex</em>.<em> That means that the gene codes for more than just the sex. </em>

<u>Building on that knowledge: </u>

<em>Sex-Related Inheritance</em> that differs from sex, is carried on one or two of an individual's sex chromosome. Whereas <em>Non-Sex-Related Inheritance</em> is carried on the other thirty chromosomes that the individual also carries.

<em>Sex-Related</em> inherited genes that are passed via the father to male offsprings, carried on the Y chromosome, are easiest to spot in a family. All males will have this trait and no females will.

Non-sex-related inheritance can be passed from male to female and from female to male, this is sometimes harder to differentiate from genes carried on the X chromosome because the mother always gives an X chromosome.

<u>Vocabulary:</u>

phenotype: the set of observable characteristics of an individual resulting from the interaction of its genotype with the environment.

7 0
3 years ago
Which scientists determined that cells come only from other cells ?
alexandr402 [8]

Answer:

Image result for Which scientists determined that cells come only from other cells ?

Cell theory was eventually formulated in 1839. This is usually credited to Matthias Schleiden and Theodor Schwann. However, many other scientists like Rudolf Virchow contributed to the theory.

Explanation:

hope this helps

6 0
4 years ago
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