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INDEX

Services

A DOOR OF HOPE

BAYARD HOUSE

BIRTHRIGHT OF DELAWARE, INC.

PREGNANCY HELP CENTER OF KENT COUNTY

SUSSEX COUNTY PREGNANCY CARE CENTER, INC.

CATHOLIC CHARITIES -- WILMINGTON

CATHOLIC CHARITIES -- DOVER

CATHOLIC CHARITIES -- GEORGETOWN

Information

A zygote is the beginning of a new human being

Coalescence of homologous chromosomes, resulting in a one-cell embryo

The term 'pre-embryo' is not used here for the following reasons

Sutton and Boveri declared independently in 1902 that the behavior of chromosomes during germ cell formation and fertilization agreed with Mendel's principles of inheritance

Human pregnancy begins with the fusion of an egg and a sperm. (p. 3) ... finally, the fertilized egg, now properly called an embryo, must make its way into the uterus

Human pregnancy begins with the fusion of an egg and a sperm, but a great deal of preparation precedes this event

We begin our description of the developing human with the formation and differentiation of the male and female sex cells or gametes

Fertilization is an important landmark because, under ordinary circumstances, a new, genetically distinct human organism is thereby formed

Although life is a continuous process, fertilization ... is a critical landmark

The moment a sperm penetrates the egg's zona pellucida, a reaction in the egg fuses the zona and the perivitelline membrane into an impermeable shield that prevents other sperm from entering.

A form of animal cloning can also occur as a result of artificial manipulation to bring about a type of asexual reproduction.

Of the experimental techniques used to demonstrate regulative properties of early embryos, the simplest is to separate the blastomeres

National Institutes of Health, Office of Science Planning and Policy, "CLONING: Present Uses and Promises", April 27, 1998

Gametogenesis is the production of germ cells (gametes)

A subset of the diploid body cells constitute the germ line.

The embryo enters the uterine cavity after half a week

Mammalian embryogenesis is considered to be a highly regulative process

The term 'clones' indicates genetic identity and so can describe genetically identical molecules (DNA clones)