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mojhsa [17]
3 years ago
8

When does crossing over occur in meiosis?

Biology
1 answer:
BigorU [14]3 years ago
8 0

Answer:

C.) prophase I

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It is winter, and you want to know where it might snow today. Look at the predicted temperature for each state. Then identify th
BartSMP [9]

Answer:

C-North Dakota and Michigan

Explanation:

It has to be 32’F or less to snow.

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3 years ago
Which organisms, out of fish, chicks, mouse, and human embryos, would be more closely related and which would be less closely re
Rainbow [258]

Answer:

the chicks and mouse would be losely conected because they have more of the same gentic material and fish and humans would havwe the same since they kind act like the same because The recent advances in developmental biology described  have established the central importance of a small number of highly conserved signal transduction pathways that mediate cell interactions crucial for animal physiology, reproduction, and development. It seems likely that many developmental toxicants might affect development by acting on those pathways. Application of the methods that have been so successful in elucidating them should now allow scientists to investigate that possibility and to determine the mechanisms by which developmental toxicants act. This chapter reviews the experimental approaches primarily responsible for the recent advances in knowledge about animal development and discusses how those approaches might be applied to developmental toxicology. Chapter 8 discusses how those approaches might lead to improved qualitative and quantitative risk assessment.

4 0
2 years ago
What are the charges both inside and outside of the neuron before you click the stimulate neuron button?
evablogger [386]

Answer:

The charges inside and outside of the neuron before receiving a stimulus are negative and positive, respectively, which corresponds to the transmembrane rest potential.

Explanation:

Neuron is the specialized cell of the nervous system in charge of transmitting electrical impulses. The generation of a nerve impulse in the form of an electric current is due to a change in the transmembrane potential.

<u>Outside the neuron cell, electrical charges are predominantly positive, and the ion with the highest concentration is sodium. In the intracellular space, a great quantity of proteins provide negative charge, and there is a predominance of potassium ions</u>. Under these conditions, the ionic channels are closed.

For this reason, a neuron at rest, before receiving a stimulus, presents positive charges on the outside and negative charges on the inside, and the membrane potential in this condition is estimated at a value of -65 mV.

Once a stimulus is produced, the ionic channels open and Na+ ions enter the cytoplasm, exchanging them for K+, which implies a change in the membrane potential which, on reaching the threshold, produces an action potential and the nerve impulse is produced.

3 0
3 years ago
Please help me I need help
wel
Since the number before the tens place is 1, that means you will round the number down instead of up so your answer is : 
4620
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3 years ago
why do saturated fatty acids have straight structures, while unsaturated fatty acids have bent structures?
Ierofanga [76]
Saturated fatty acids are chains of single bonded carbons surrounded by hydrogen atoms.

Unsaturated fatty acids have bent structures due to double bonding between carbon atoms in the chain. When carbons create double bonds with each other they are no longer able to hold as many hydrogens as a saturated fatty acid
7 0
3 years ago
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