OBJECTIVE LIFE SCIENCE
GENETICS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
Why is crossing over during Prophase I important?
|
|
It purifies the dna to decrease the likelihood of genetic diseases being transferred to offspring.
|
|
|
It insures the offspring are exactly like the parents creating organisms that are virtually identical to one another in a population.
|
|
|
The process creates additional chromosomes so the offspring have more chromosomes than the parents and are therefore more likely to survive.
|
|
|
New combinations of alleles are produced leading to genetic variation in offspring which in essence adds to variation in the population of that species
|
Explanation:
Detailed explanation-1: -Why is Crossing Over Important? Crossing over helps to bring about random shuffling of genetic material during the process of gamete formation. This results in formation of gametes that will give rise to individuals that are genetically distinct from their parents and siblings.
Detailed explanation-2: -Because of recombination and independent assortment in meiosis, each gamete contains a different set of DNA. This produces a unique combination of genes in the resulting zygote. Recombination or crossing over occurs during prophase I.
There is 1 question to complete.