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Korvikt [17]
3 years ago
9

Please help. This is bio question.

Biology
2 answers:
NikAS [45]3 years ago
7 0
The answer is D- 1:2:1
Effectus [21]3 years ago
3 0

Answer:

D: 1:2:1

Explanation:

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How are primary and secondary succession the same?
ruslelena [56]
They are both the same and different in some way. But, if you're looking for the similarities, they both "rebulid" the environment that has been damaged by nature itself or by humans. The only difference is Primary succession takes longer than secondary succession. I hope this helped! :-)

8 0
3 years ago
What structure allows the hypothalamus to have direct communication with the anterior pituitary?
ANEK [815]

Hypophyseal portal system allows the hypothalamus to have direct communication with the anterior pituitary.

The hypophyseal portal system is a network of blood vessels that connects the anterior portion of the gland and hypothalamus at the base of the brain. Two capillary beds, one in the median eminence and the other in the anterior pituitary, make up the portal system. Its principal job is to swiftly transfer and exchange hormones between the anterior pituitary gland and the hypothalamic arcuate nucleus.

The cortisol, androgens, and aldosterone hormones interact with anterior pituitary gland cells via travelling through the hypophyseal portal system. Hormonal signaling through the hypophyseal portal system enables connection between these two structures.

To learn more about hypothalamus and pituitary here,

brainly.com/question/28013779

#SPJ4

8 0
1 year ago
What is it like to be a dog? Humans can answer, but I really want the opinion of someone who has experience being a dog.
OverLord2011 [107]

Answer:

this probably isn't a real answer but if I were a dig I would love the fact I could pee anywhere

3 0
4 years ago
The property of some metabolic pathways that enables them to serve multiple functions in the breakdown, synthesis, and conversio
andrew-mc [135]

Answer:

The property of some metabolic pathways that enables them to serve multiple functions in the breakdown, synthesis, and conversion of metabolites is known as <u>amphibolism.</u>

Explanation:

Amphibolic pathways are the biochemical pathways which have both catabolic (breakdown ,conversion to metabolites)  and anabolic functions (synthesis)

<u>For example:</u>  

  • Pentose Phosphate Pathway
  • TCA cycle
  • Embden-Meyerhof pathway
3 0
3 years ago
Read 2 more answers
Describe what happens during the process of crossing over
Zanzabum

Answer:

crossing over, process in genetics by which the two chromosomes of a homologous pair exchange equal segments with each other. Crossing over occurs in the first division of meiosis . At that stage each chromosome has replicated into two strands called sister chromatids. The two homologous chromosomes of a pair synapse, or come together. While the chromosomes are synapsed, breaks occur at corresponding points in two of the non-sister chromatids, i.e., in one chromatid of each chromosome. Since the chromosomes are homologous, breaks at corresponding points mean that the segments that are broken off contain corresponding genes , i.e., alleles. The broken sections are then exchanged between the chromosomes to form complete new units, and each new recombined chromosome of the pair can go to a different daughter sex cell. Crossing over results in recombination of genes found on the same chromosome, called linked genes, that would otherwise always be transmitted together. Because the frequency of crossing over between any two linked genes is proportional to the chromosomal distance between them, crossing over frequencies are used to construct genetic, or linkage, maps of genes on chromosomes. Mutations , temperature changes, and radiation all affect crossing over frequency. Under the microscope, a crossover has the appearance of an X and is called a chiasma.

Explanation:

6 0
3 years ago
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