Bio Lab 4 Flashcards
Life cycle
Sequence of stages leading from adults of one generation to the next
What is an essential factor of life cycle
2 sets of chromosomes
All sexual life cycles include
Alternation of diploid
And haploid
What is the haploid and what does it result from
Eggs and sperm
Cell division process of meiosis
When does diploid stage start and produces what
After sperm and egg fertilize
Diploid zygote
When does diploid stage continue as the …
Diploid zygote divides by mitosis to develop into multicellular diploid adult
The adult produces what by what process
Haploid gametes by meiosis
Meiosis is the process that produces what
Gametes necessary for sexual reproduction
During meiosis parent cell divides how many times while chromosomes double ? To produce what
Which are haploid or diploid ?
2
1
4 daughter cells
Haploid
When two haploid gametes combine it is said to be ?
Diploid
Two haploid form to produce what?
Diploid zygote
Unique
36 chromosomes can be formed into
23 homologous pairs
During meiosis homologous chromosomes do what ? And provide what
Line up two opportunities of diversity
What is first opportunity of diversity called
Independent assortment
Recombination is what
Crossing over of daughter cells creating not exact copies
Formation of zygote is then followed by
Rapid cell divisions without cell growth known as cleavages
During division of zygote what remains unchanged and what increases
Volume of embryo
Number of cells
Mitosis is
Process of cell division where cell doubles chromosomes and sow rates into two copies with superstar nuclei
Mitosis creates how many daughter cells
2 that are identical
What is function of mitosis
Somatic cells
Humans cause what that disrupt urchin eggs
Disturbance
What can show water quality y
Percentage of successful fertilization or quality of gametes
