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Gennadij [26K]
3 years ago
6

Which of these conditions made it beneficial for aquatic plants to move onto land?

Biology
1 answer:
Vikentia [17]3 years ago
4 0
Bright sunlight, lack of competitors, and more carbon dioxide
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Explain the relationship between crossing over and genetic variation
7nadin3 [17]

Answer:

When homologous chromosomes form pairs during prophase I of meiosis I, crossing-over can occur. Crossing-over is the exchange of genetic material between homologous chromosomes. It results in new combinations of genes on each chromosome. It is obviously another source of genetic variation in offspring.

Hope this helps you. Do mark me as brainliest.

8 0
3 years ago
What classification would best an oak tree?
Rudiy27
QUESTION NUMBER ONE IS A AND FOR QUESTION NUMBER TWO IT IS  B

8 0
3 years ago
The wild-type color of horned beetles is black, although other colors are known. A black horned beetle from a pure-breeding stra
Kisachek [45]

One hypothesis that explains the result is : A) Two genes are involved with  12:3:1  epistasis, such that A_B_ and A_bb are black, aaB_ is brown,and aabb is green.

Explanation:

  • This is a case of Dominant Epistasis.
  • When two genes are involved and presence of dominant allele of one gene masks the effect of either allele of the second gene then the epistasis is termed as dominant epistasis.
  • In the given case black :brown: green ratio is approximately equal to  12:3:1.
  • Here presence of a dominant A allele that is responsible for the black colour masks the effect of either allele of B. Therefore A_B_ and A_bb produces black beetles
  • Again , absence of dominant A allows B to express itself and Brown beetles are produced thus aaB_ is brown.
  • When both the genes are present as recessive alleles, neither brown nor black colour is expressed and the beetles are green.Thus, aabb are green.

4 0
3 years ago
Which one of the following statements presents a condition required for the hardy-Weinberg principle to be in effect?
Aleks04 [339]
The answer is random matting occurs!
5 0
3 years ago
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Asking ........ and defining ...........
stellarik [79]

Answer:

Sorry, I'm confused there has to be more to it if there is not then there is no true way for anyone to fill in the blanks. <3

6 0
2 years ago
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