Reproduction
Reproduction is one of the unique properties of ______
Life
What is the production of offspring whose genes all come from one parent without the fusion of egg and sperm.
asexual reproduction
What is the production of offspring by the fusion of haploid gametes (eggs & sperm) from two parents to form a diploid zygote (fertilized egg).
sexual reproduction
Evolution is linked to _____________
Reproduction
diploid eggs are produced by _________ which then develop directly.
mitosis
What is a fertilized egg called?
Zygote
How many modes of reproduction are recognized?
2
Bacteria and many protozoa can reproduce this way – separating into two or more individuals approximately the same size. What is it called
Binary fission
True or False: Sexual reproduction creates genetic variability and it is increased by the random combinations of genes from the parents.
True
What are the two modes of reproduction called?
Asexual and sexual
What is a form of asexual reproduction where new individuals form as offshoots of a parent? Think of the Hydra
Budding
What are the disadvantages or cost of sexual reproduction versus asexual reproduction
More complicated, finding a mate.
Requires more time.
Uses more energy.
The cost of meiosis to the female is passage of only half of her genes to offspring.
Production of males reduces resources for females that could produce eggs.
Slower population growth
Reproduction is the production of ________
offspring
What is a type of cell division that results in two daughter cells each having the same number and kind of chromosomes as the parent nucleus, typical of ordinary tissue growth.
mitosis
Gametes arise by meiosis because?
Because meiosis creates cells that are destined to become gametes (or reproductive cells), this reduction in chromosome number is critical (23 and 23 for human chromosomes) — without it, the union of two gametes during fertilization would result in offspring with twice the normal number of chromosomes!