Chapter 9 Flashcards
Meiosis
Occurs in gonads
Results in haploid cells containing 1 full set of chromosomes
Sexual reproduction
Progeny inherit DNA from 2 parents
Asexual reproduction
Progeny inherit DNA from a single parent
Vegetative reproduction
An individual is produced from no sexual tissues of the parent
Vivipary
Embryo develops while still attached to mother plant
Clones
Asexual progeny have the same genotype as parent
Binary fission
Genes are duplicated and then the cell divides into 2 identical cells
Parthenogenesis
An embryo is produced without fertilization
2 results of parthenogenesis
Clones and genetically variable offspring
Cost of meiosis
50% reduction in the number of parent’s genes passed on to the next generation
Hermaphroditism
When an individual possesses male and female gametes
2x as many copies of its genes
Benefits of sexual reproduction
Purging of mutations
How do mutations accumulate?
Through sexual reproduction