Portage Genetics module 1 Questions &
Answers
What is an example of selective breading? - ANSWER fossils of dogs showing they
were from wolf ancestors (humans and wolfs were competitors, then turned to
companions)
What is selective breading? - ANSWER a process used by humans that allows only
those animals with desired characteristics to produce the next generation of organisms.
Who proposed the idea of epigenesis - ANSWER William Harvey
define epigenesis - ANSWER concept that a fertilized human egg undergoes
developmental events that lead to the formation of a human
Define preformation - ANSWER a fertilized egg contained a tiny version of a fully
developed adult (called a homunculus)
Who introduced the idea of cell theory (2) - ANSWER Matthias Schleiden and Theodor
Schwann
define spontaneous generation - ANSWER the idea that living things can spontaneously
generate from non living components
define genetics - ANSWER the study of heredity
what is the chromosomal theory of inheritance? - ANSWER heredity and development
depends on genes which are contained in chromosomes
define genes - ANSWER the units of heredity that are passed from parent to offspring
help determine the characteristics of an organism
where are chromosomes found and why are they important - ANSWER found in the
nucleus and hold genetic information
what is a diploid number? - ANSWER The number of chromosomes an organism has
(not paired)
what is a haploid number - ANSWER half the number of chromosomes an organism
has, ie the number of pairs
What is the haploid and diploid number of humans - ANSWER 23, 46
define homologous chromosomes - ANSWER Pairs of chromosomes
Answers
What is an example of selective breading? - ANSWER fossils of dogs showing they
were from wolf ancestors (humans and wolfs were competitors, then turned to
companions)
What is selective breading? - ANSWER a process used by humans that allows only
those animals with desired characteristics to produce the next generation of organisms.
Who proposed the idea of epigenesis - ANSWER William Harvey
define epigenesis - ANSWER concept that a fertilized human egg undergoes
developmental events that lead to the formation of a human
Define preformation - ANSWER a fertilized egg contained a tiny version of a fully
developed adult (called a homunculus)
Who introduced the idea of cell theory (2) - ANSWER Matthias Schleiden and Theodor
Schwann
define spontaneous generation - ANSWER the idea that living things can spontaneously
generate from non living components
define genetics - ANSWER the study of heredity
what is the chromosomal theory of inheritance? - ANSWER heredity and development
depends on genes which are contained in chromosomes
define genes - ANSWER the units of heredity that are passed from parent to offspring
help determine the characteristics of an organism
where are chromosomes found and why are they important - ANSWER found in the
nucleus and hold genetic information
what is a diploid number? - ANSWER The number of chromosomes an organism has
(not paired)
what is a haploid number - ANSWER half the number of chromosomes an organism
has, ie the number of pairs
What is the haploid and diploid number of humans - ANSWER 23, 46
define homologous chromosomes - ANSWER Pairs of chromosomes
