Reproduction Flashcards
What is sexual reproduction?
WHERE GENETIC INFORMATION FROM TWO ORGANISMS IS COMBINED TO PRODUCE OFFSPRING WHICH ARE GENETICALLY DIFFERENT TO EITHER PARENT
What is the male gamete and the female gamete called?
MALE - SPERM
FEMALE - EGG
Each gamete contains 23 chromosomes, HALF the number of chromosomes in a normal cell. Why is this?
SO HALF FROM THE MOTHER AND HALF FROM THE FATHER FORM A CELL WITH THE FULL NUMBER OF CHROMOSOMES
What does sexual reproduction involve?
THE FUSION OF MALE AND FEMALE GAMETES. BECAUSE THERE ARE TWO PARENTS, THE OFFSPRING CONTAIN A MIXTURE OF THEIR PARENTS GENES
Why does the offspring inherit features from both parents?
BECAUSE ITS RECEIVED A MIXTURE OF CHROMOSOMES FROM ITS MUM AND ITS DAD
How can an ordinary cell make a new cell?
BY SIMPLY DIVIDING IN TWO
When a new cell is formed from simply dividing an ordinary cell in two - the new cell has exactly the same genetic information (i.e. Genes) as the parent cell, what is this known as?
ASEXUAL REPRODUCTION
How many parents are there in asexual reproduction?
ONE PARENT
Is there a fusion of gametes in asexual reproduction?
NO
Is there a mixing of chromosomes in asexual reproduction?
NO
Is there genetic variation between parent and offspring in asexual reproduction?
NO
The offspring in asexual reproduction are genetically identical to the parent, what is this called?
CLONES
Some organisms produce offspring using asexual reproduction, give an example of TWO organisms which do.
BACTERIA AND SOME PLANTS
What sexual reproduction produce?
GENETICALLY DIFFERENT CELLS