CBSE Class 10 Answered
HOW DO TWINS ARE BORN???
Asked by sree harsha | 12 Aug, 2012, 10:15: AM
Expert Answer
A twin is one of two offspring produced in the same pregnancy and have shared the same uterus.
Twins can either be monozygotic (identical), meaning that they develop from one zygote that splits and forms two embryos, or dizygotic (fraternal) because they develop from two separate eggs that are fertilized by two separate sperms.
Fraternal Twins (non-identical twins) usually occur when two fertilised eggs are implanted in the uterine wall at the same time, i.e. when the mother releases two eggs and both become fertilized by two different sperms. The two eggs form two zygotes and these twins are therefore also known as dizygotic.
Dizygotic twins, like any siblings, have a number of different chromosones that distinguish them. Dizygotic twins may be a different sex or the same sex
Identical Twins occur when a single egg is fertilized by a single sperm to form one zygote (monozygotic) but the zygote then divides into two separate embryos. Depending on the stage at which the zygote divides. identical twins may share the same amnion (in which case they are known as monoamniotic) or not (diamniotic). Diamniotic identical twins may share the same placenta (known as monochorionic) or not (dichorionic). All monoamniotic twins are monochorionic.
Answered by | 13 Aug, 2012, 11:45: AM
Application Videos
-
Budding in yeast
This video describe Budding in yeast. -
Cell division in unicellular organisms ...
This video discusses the process of cell division in unicellular organisms. -
Spore formation
This video talks about the significance of reproduction through spores. -
Embryo Development in Humans
This video explains the process of embryo nourishment inside the uterus. -
Role of fallopian tubes in reproduction ...
This video explains the importance of fallopian tubes in reproduction.
Concept Videos
-
Reproduction in Organisms
Meaning, significance and types of reproduction, Asexual reproduction and ... -
Reproduction in Organisms
Understand the process of pollination and fertilization during sexual repr... -
Reproduction in Organisms
Discuss changes taking place in male and females during puberty. Parts of ... -
Reproduction in Organisms
Learn the process of fertilization in human beings, menstrual cycle, metho... -
Reproduction in Organisms
Meaning, significance and types of reproduction, Asexual reproduction and ...
CBSE 10 - Biology
Asked by ar3886267 | 01 Mar, 2024, 05:57: PM
ANSWERED BY EXPERTCBSE 10 - Biology
Asked by janu69659 | 28 Feb, 2024, 09:12: PM
ANSWERED BY EXPERTCBSE 10 - Biology
Asked by baibhabsenapati | 16 Feb, 2024, 01:29: PM
ANSWERED BY EXPERTCBSE 10 - Biology
Asked by mohammedtaiyabt | 14 Feb, 2024, 05:42: AM
ANSWERED BY EXPERTCBSE 10 - Biology
Asked by ananyapatharidav | 06 Feb, 2024, 06:51: PM
ANSWERED BY EXPERTCBSE 10 - Biology
Asked by artikumari118 | 05 Feb, 2024, 10:45: AM
ANSWERED BY EXPERTCBSE 10 - Biology
Asked by muskan.bharti.dih | 08 Nov, 2023, 11:53: AM
ANSWERED BY EXPERTCBSE 10 - Biology
Asked by saritadiwakarjha | 09 Mar, 2023, 02:45: AM
ANSWERED BY EXPERTCBSE 10 - Biology
Asked by ten.foundation | 15 Jul, 2022, 02:32: PM
ANSWERED BY EXPERTCBSE 10 - Biology
Asked by winkeyroy98 | 15 Jul, 2022, 02:30: PM
ANSWERED BY EXPERT
