Monozygotic Twins: Early Stage Of Development

Decent Essays
1. Monozygotic twins-Twins resulting from one zygote that at an early stage of development separated into independently growing cell aggregations giving rise to two individuals of the same sex and identical genetic constitution. I've always heard of "identical twins" but most of my life I had never heard of the scientific term monozygotic twins. Learning the scientific word is a definite increase in my own personal knowledge.

2. Umbilical cord-A flexible cordlike structure containing blood vessels and attaching a human or other mammalian fetus to the placenta during gestation. I was ignorant about umbilical cord infections or umbilical cord hernia until I had to learn about it during pregnancy.

3. Phenotype- The set of observable characteristics of an individual resulting from the interaction of its genotype with the environment. I heard this word for the first time when someone was explaining the African migration of the first human beings on earth.
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Meiosis- A type of cell division that results in four daughter cells each with half the number of chromosomes of the parent cell, as in the production of gametes and plant spores. I have heard a lot about mitosis but not enough about meiosis.

5. Heterozygous-having dissimilar pairs of genes for any hereditary characteristic.Heterozygosity occurs when an individual has two different alleles of a gene. I've never heard of this word before. It's nice to learn about allele's as well.

6. Carrier-A carrier is a person who has a change in one copy of a gene. I had always heard the word "carrier" because of friends with the sickle cell anemia

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