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Aleks04 [339]
3 years ago
11

Test multiple alleles sex

Biology
2 answers:
grin007 [14]3 years ago
6 0
What are you talking about
Nata [24]3 years ago
5 0
You should give more info, so people can answer.
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Use this portion of a dichotomous key for tree identification to answer the question. 1a. Needlelike leaf ® Step 10 1b. Broad le
Bond [772]

Answer:

(if these are your choices)

A. They are lobed, simple leaves and are attached staggered on the branch.

B. They are not heart shaped and are attached staggered on the branch.

C. They are compound, broad leaves and are attached oppositely on the branch.

D. They are nonlobed, simple leaves and are attached oppositely on the branch.

the correct answer is D.

Explanation:

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2 years ago
Which of the following solid fuels has the highest heating value? A. Bituminous coal B. Lignite C. Wood D. Coke
andreev551 [17]
Among the following solid fuels given in the question, coke has the highest heating value. The correct option among all the options that are given in the question is the last option or option "D". The heating value of coke is calculated to be between 28000 kJ/Kg to 31000 kJ/kg. I hope the answer helps you.
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2 years ago
7. When two or more species live together in a close, long-term relationship, it is called
alisha [4.7K]
7: symbiotic relationship
8: mutualism 
9: commensalism  

8 0
3 years ago
How do I write a CER paragraph? I need one for Science.
user100 [1]

Well when writing a CER first you need to state your claim after stating your claim you need to support your claim with evidence from your sources and after that you need to give reasons on how your evidence supports your claim

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3 years ago
Your brain and neurons are in constant action, sending billions of ___________and________messages each day to keep everything, f
Leviafan [203]

Answer:

Until recently, most neuroscientists thought we were born with all the neurons we were ever going to have. As children we might produce some new neurons to help build the pathways - called neural circuits - that act as information highways between different areas of the brain. But scientists believed that once a neural circuit was in place, adding any new neurons would disrupt the flow of information and disable the brain’s communication system.

In 1962, scientist Joseph Altman challenged this belief when he saw evidence of neurogenesis (the birth of neurons) in a region of the adult rat brain called the hippocampus. He later reported that newborn neurons migrated from their birthplace in the hippocampus to other parts of the brain. In 1979, another scientist, Michael Kaplan, confirmed Altman’s findings in the rat brain, and in 1983 he found neural precursor cells in the forebrain of an adult monkey.

These discoveries about neurogenesis in the adult brain were surprising to other researchers who didn’t think they could be true in humans. But in the early 1980s, a scientist trying to understand how birds learn to sing suggested that neuroscientists look again at neurogenesis in the adult brain and begin to see how it might make sense. In a series of experiments, Fernando Nottebohm and his research team showed that the numbers of neurons in the forebrains of male canaries dramatically increased during the mating season. This was the same time in which the birds had to learn new songs to attract females.

Why did these bird brains add neurons at such a critical time in learning? Nottebohm believed it was because fresh neurons helped store new song patterns within the neural circuits of the forebrain, the area of the brain that controls complex behaviors. These new neurons made learning possible. If birds made new neurons to help them remember and learn, Nottebohm thought the brains of mammals might too.

Other scientists believed these findings could not apply to mammals, but Elizabeth Gould later found evidence of newborn neurons in a distinct area of the brain in monkeys, and Fred Gage and Peter Eriksson showed that the adult human brain produced new neurons in a similar area.

For some neuroscientists, neurogenesis in the adult brain is still an unproven theory. But others think the evidence offers intriguing possibilities about the role of adult-generated neurons in learning and memory.

if wrong report me

5 0
3 years ago
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