early ideas about inheritance Flashcards
1
Q
what was Aristotle’s theory?
A
pangenesis (widely accepted)
2
Q
what was pangenesis?
A
egg and sperm consisted of particles (pangenes) from all body parts
3
Q
when do pangenes develop into parts of the baby’s body?
A
upon fertilization
4
Q
what was Anton van Leeuwenhoek’s theory?
A
discovered living sperm- thought he saw a “little man” inside the head of the sperm
5
Q
according to Anton van Leeuwenhoek’s theory, what was the mother’s contribution?
A
to incubate the “little man”
6
Q
what was the theory during the 1800s?
A
“blending theory”
7
Q
what was the blending theory?
A
observed offspring had characteristics of both parents
believed that original characteristics would not appear in future generations
