Sometimes the separation of twins is incomplete and they are born attached and remain so even after birth. Such twins are known as:
- AFraternal
- BDizygotic
- CIdentical
- DSiamese
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The zygote passes through several developmental stages until implantation. Describe each stage briefly with suitable diagrams.
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View SolutionThe blastula of prototherians is called
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View SolutionMatch the following with respect to stages of embryonic development in human.
Column $I$ Column $II$ $a$. Fully formed morula $i$. By end of $7^{\text{th}}$ day after fertilization $b$. Fully formed blastocyst $ii$. $15$ days after fertilization $c$. Completion of implantation process $iii$. By end of $4^{\text{th}}$ day after fertilization $d$. Fully formed gastrula $iv$. By end of $10^{\text{th}}$ day after fertilization
Choose the correct option-
| Column $I$ | Column $II$ |
| $a$. Fully formed morula | $i$. By end of $7^{\text{th}}$ day after fertilization |
| $b$. Fully formed blastocyst | $ii$. $15$ days after fertilization |
| $c$. Completion of implantation process | $iii$. By end of $4^{\text{th}}$ day after fertilization |
| $d$. Fully formed gastrula | $iv$. By end of $10^{\text{th}}$ day after fertilization |
Choose the correct option-
The foetus develops its limbs and digits in . . . . . . during embryonic development.
Which of the following statements is true regarding cleavage?
MediumAIPMT 2002
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