How is it possible for plants that have identical genetic makeup to show differences?
water, the nutrients available or lacking in the soil, and the treatment given to a plant affect its phenotype. Thus, two genetically identical plants in different environments will show differences.
How does the environment affect identical twins?
Because identical twins share all of their genes, their measurements of IQ and sleep time will be more similar the bigger role genes play in it (i.e., differences between two identical twins must be caused by the environment because their genes are the same).
Can identical twins develop at different rates?
The differences in development would become negligible; however, the difference in size would be likely to continue throughout the pregnancy.
Can identical twins be different sizes?
These identical twins of different size are referred to as discordant twins; twin-to-twin transfusion is diagnosed by ultrasound and may be treated by advanced in-utero therapies, according to the NIH. Ask your doctor about the varying birth weight of twins.
How is it possible for genetically identical plant cells to become quite different from each other?
This is because all cells in the body have the same genome but do not have the same epi-genome which controls gene expression. This will make cells to have different gene expression profiles which eventually will make cells to take different fates.
Can plants be genetically identical?
Plants that are able to propagate by asexual means produce genetically identical plants that are clones. Clones have been commonplace in horticulture since ancient times; many varieties of plants are cloned simply by obtaining cuttings of their leaves, stems, or roots and replanting them.
Can identical twins have different sacs?
Identical, or monozygotic, twins may or may not share the same amniotic sac, depending on how early the single fertilized egg divides into 2. If twins are a boy and a girl, clearly they are fraternal twins, as they do not have the same DNA.
Do twin embryos develop slower?
Conclusion: Twin fetus experience slowing of growth beginning at ∼26 weeks of gestation and a greater degree of asymmetric growth pattern compared with singletons. These findings suggest that the slower growth of twins may reflect a state of “relative growth restriction” compared with singleton gestations.
What happens when one twin is bigger than the other?
The baby acts dehydrated and cannot make much urine. Thus, the bladder is small or invisible and the amniotic fluid begins to decline. The recipient twin, however, has too much blood flow. It grows faster and is larger than the other twin.