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Isolating mechanisms that take effect before or during fertilization are termed?
Wiki User
∙ 14y ago
prezygotic
Wiki User
∙ 14y ago
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What alleles are received during fertilization?
genotype
In which vertebrates is fertilization exclusively internal?
Fertilization is internal in reptiles, birds, and mammals.
What does the union of the gametes during fertilization leads to the production?
Of a zygote.
Does mitosis happen before or after the zygote is formed?
The zygote results from the combination of gametes (sperm and egg) during fertilization. The zygote undergoes mitosis after this, so that it can divide and grow into an organism.
What is the chromosome number during fertilization?
The zygote's number of chromosomes is double that of the two sex cells
Two species breeding at different times describes what isolating mechanisms?
Temporal isolation: Individuals do not mate because they are active at different times. This may be different times of the day or different seasons. The species mating periods may not match up. Individuals do not encounter one another during either their mating periods, or at all. Source:Wikipedia: Isolating mechanisms
Why are there more egg and sperm cells produced during external fertilization than during internal fertilization?
Why are there generally more eggs and sperm cells produce during external fertilization thean internal fertilization
What unites during fertilization?
During fertilization the sperm unites with the egg. This typically occurs in the fallopian tube.
Is crossing over takes place in sperms before fertilization?
Crossing over occurs during fertilization. This is the mixing of alleles from each of the parents in order to make the offspring.
The fusing together of two gametes at fertilization is?
Gametes fuse together during fertilization.
Is fertilization possible during menstruation?
Not the least
What alleles are received during fertilization?
genotype
What process by which the egg cell and sperm cell unite during sexual reproduction?
No. Fertilization is the joining of an egg and sperm.
In which vertebrates is fertilization exclusively internal?
Fertilization is internal in reptiles, birds, and mammals.
Can fertilization happen during pregnancy?
No, there is no ovulation when pregnant.
Which fuses with an egg during fertilization?
Semen or sperm
During which stage of the general troubleshooting process should you identify characteristics of problems?
Isolating the problem
