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Answered 2011-04-07 01:02:33

the crossing over b/w homologous chromosomes is a way for exchange of genes b/w this contributes to genetic variability among organisms.

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Does crossing over happen meiosis?

Crossing over happens in Prophase1 of meiosis.


Is crossing over unique to meiosis?

There are two stages in meiosis: meiosis I and meiosis II Crossing over occurs in meiosis I and yes crossing over is unique to meiosis I for the fact that it doesn't occur in mitosis nor meiosis II.


What is the biological significance of prophase 1 in meiosis 1?

The biological significance of prophase 1 in meiosis 1 is the occurrence of crossing-over. This process increases genetic variation in a species.


Crossing over occurs during which phase of meiosis?

Crossing over occurs during Prophase I of meiosis.


Does crossing over happen in meiosis?

yes crossing-over occurs in meiosis also known as genetic drifting


What is the genetic significance of crossing over during meiosis?

Crossing over sort of 'mixes up' the DNA. The daughter cells from that first cross are identical to each other but not to the mother's cell.


How does crossing over affect the gametes that are produced by meiosis?

by crossing over


What is crossing over in meiosis 1 and meiosis 2?

water


Where does crossing over occur?

Crossing over occurs during Prophase I of meiosis.


When does crossing over occur in meiosis?

Crossing over occurs during Prophase I.


In meiosis what is crossing over?

crossing over is interchanging the parts of homologus chromosomes


Crossing over is one of the most important events in meiosis because?

Crossing over is one of the most important events in meiosis because?


How can crossing over introduce additional genetic variablity into the products of meiosis?

how can crossing over introduce additional genetic variability into the products of meiosis


When does crossing over occur in this meiosis?

Crossing over occurs during synapsis, prophase I.


Which phase of meiosis would crossing over occur?

Crossing over happens in the prophase.


What is crossing over points called?

Meiosis


How does meiosis lead to variety?

crossing over


How is prophase1 different in meiosis than in mitosis?

In prophase I of meiosis, crossing over between homologous chromosomes occurs. Crossing over does not occur in mitosis.


What stage of meiosis is the longest?

prophase I of meiosis I because that is where crossing over occurs


When do stages of meiosis recombination or crossing over occur?

Crossing over occurs during Prophase I.


In which phase will crossing-over occur?

Crossing over occurs during Prophase I of meiosis.


What is the significance of crossing over and nondisjunction?

The significance of crossing over and nondisjunction is that it increases biodiversity. This is important for the environment and food chains.


Crossing-over occurs during the stage of meiosis is called?

prophase I


How does effect over crossing over to mitosis?

Crossing over does not occur during mitosis, it only occurs in meiosis.


What is crossing over in meiosis?

Crossing over is the exchange of corresponding segments of DNA molecules by nonsister chromotids.


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