Developmental Bio
Test 1 / Questions & Verified Answers.
Question Answer
Seeks the understanding of how organisms evolve over
Evolutionary Biology
time
How many cells in
210 different types of cells (10-75 trillion cells in body)
human body?
production of gametes in germ cells via meiosis (1N
gametes) It is an orderly program of changes in cell
Gametogenesis shape and form. Activation of certain sets of genes and
suppression of others (in animals, gametes are
produced in gonads)
the reason why a single cell can give rise to a creature
non-equivalent cell
composed of several different specialized cell types,
division
yet all having same genes.
two cells that have the same genes, but are not exactly
Progeny
the same
Cell Communication needed to coordinate development process
, Diploid chromosome number is 2N (46 chromosomes)
Haploid chromosome number is 1N (23 chromosomes)
involves 2 divisions and reduces chromosome number
Meiosis (produces gametes) Starting with a single germ cell, 4
gametes are produced
Life cycle where the dominant life cycle is diploid
Diplontic Life Cycle (humans). The only haploid life cycle within these
organisms is within the gametes
Diplohaplontic Life alternating generations between both multicellular
Cycle phases of haploid and diploid (mosses and ferns)
Haploid phase dominates life cycle, mitosis actually
results in the production of gametes. The single-celled
Haplontic Life Cycle
zygote production is the only time these organisms go
through the diploid phase.
1) Development and Specialization: lots of
Cell Division is differentiation must occur, non-equivalent cell division
responsible for: occurs here 2) Growth: don't want differentiation 3)
Maintenance: replace old cells with new ones
Mitosis division of nuclear material
division of the cytoplasm, often referred to as cleavage
Cytokinesis:
in animals. Begins with formation of cleavage furrow
Test 1 / Questions & Verified Answers.
Question Answer
Seeks the understanding of how organisms evolve over
Evolutionary Biology
time
How many cells in
210 different types of cells (10-75 trillion cells in body)
human body?
production of gametes in germ cells via meiosis (1N
gametes) It is an orderly program of changes in cell
Gametogenesis shape and form. Activation of certain sets of genes and
suppression of others (in animals, gametes are
produced in gonads)
the reason why a single cell can give rise to a creature
non-equivalent cell
composed of several different specialized cell types,
division
yet all having same genes.
two cells that have the same genes, but are not exactly
Progeny
the same
Cell Communication needed to coordinate development process
, Diploid chromosome number is 2N (46 chromosomes)
Haploid chromosome number is 1N (23 chromosomes)
involves 2 divisions and reduces chromosome number
Meiosis (produces gametes) Starting with a single germ cell, 4
gametes are produced
Life cycle where the dominant life cycle is diploid
Diplontic Life Cycle (humans). The only haploid life cycle within these
organisms is within the gametes
Diplohaplontic Life alternating generations between both multicellular
Cycle phases of haploid and diploid (mosses and ferns)
Haploid phase dominates life cycle, mitosis actually
results in the production of gametes. The single-celled
Haplontic Life Cycle
zygote production is the only time these organisms go
through the diploid phase.
1) Development and Specialization: lots of
Cell Division is differentiation must occur, non-equivalent cell division
responsible for: occurs here 2) Growth: don't want differentiation 3)
Maintenance: replace old cells with new ones
Mitosis division of nuclear material
division of the cytoplasm, often referred to as cleavage
Cytokinesis:
in animals. Begins with formation of cleavage furrow
