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kow [346]
3 years ago
10

Which of the following distinguishes prophase 1 of meiosis from prophase of mitosis?

Biology
1 answer:
Arturiano [62]3 years ago
5 0

Answer:

The correct answer is A). <em>Homologous chromosomes pair up</em>.

Explanation:

During prophase 1, it occurs chromosomes condensation. The principal difference with the mitosis prophase is that during meiosis prophase 1, each chromosome gets carefully in pair with its homologous chromosome. They do so to make the crossing-over possible, stage where they interchange their parts.

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The biological species concept is least relevant to which of the following groups of organisms?
Luba_88 [7]
<h2>b) is the correct option </h2>

Explanation:

The biological species concept defines a species as a group of individuals living in one or more populations that can potentially interbreed to produce healthy, fertile offspring

  • The biological species concept connects the idea of a species to the process of evolution
  • Because members of a species can interbreed, the species as a whole has a common gene pool, a collection of gene variants
  • In order to be considered to be a single species in the biological species concept, a group of organisms must produce healthy, fertile offspring when they interbreed
  • In some other cases, organisms of different species can mate and produce healthy offspring, but the offspring are infertile, can’t reproduce

Hence it includes the groups which are reproductively isolated so asexual fungi will be least relevant to this group

5 0
3 years ago
Scientists build models based on what they know from previous research to derive testable hypotheses. Independently, both Watson
Trava [24]

Answer:

Nitrogenous bases contain the genetic information, their amount is variable among different species, and the arrangement of these bases is also variable among different species

Explanation:

Both Watson-Crick and Pauling's DNA models considered that DNA nitrogenous bases (i.e., Adenine, Cytosine, Thymine and Guanine) contain the genetic information that determines the characteristics of living organisms. Moreover, both DNA models also considered that nitrogenous base composition varies between species, as well as the arrangement of these bases in the DNA chain also varies between species. Based on these features, Linus Pauling considered that a model where nitrogenous bases would be arranged on the outside of the DNA molecule would be easier for the DNA molecule to be replicated, transcribed, or repaired. Although incorrect, Pauling's DNA triple helix model was fundamental to develop the helical (double-stranded) structure of DNA, which was finally discovered by Watson and Crick in 1953.

5 0
3 years ago
The deepest ocean trenches have high salt concentrations that can reach upwards of
kykrilka [37]
Trench
A long , narrow depression of the sea floor formed where a subdcting plate sinks into the mantle
Hope you get it!
7 0
3 years ago
What notes information about the users who access a computer network?
Elina [12.6K]

Answer: A. Log file

Explanation:

a file that records either events that occur in an operating system

3 0
3 years ago
Which of the following is an example of positive feedback
zepelin [54]

Answer:

a the body shivers to generate heat

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3 years ago
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