Meiosis increases genetic variability mainly by a process known as crossing over or synapsis during prophase I. During this process, homologous chromosomes link up to form tetrads that exchange DNA at locations known as chiasma in order to form genetically different chromosomes.
It basically function the same for example we move are arms and legs. different shape but function the same. is it alive?. that's the example.Not sure.
Answer:
Keystone species
Explanation:
A keystone species is the one that affects the structure and function of the community irrespective of its small population size. The keystone species is not the most abundant species of the community but occupies an ecological niche that regulates and maintains the structure and function of the rest of the community.
Elephants serve in the dispersal of seeds, make new habitats for various plant species by crushing the woody plants with their feet. Since elephants are shown to regulate the species richness by making space for new species and seed dispersal, they are the keystone species.
Answer:
The 'Mole'
Explanation:
In the International Systems of Units i.e. SI, mole is the unit for the measurement of the amount of substances, or in simple terms the number of microscopic molecules or particles in a given sample is measured in mole. It is denoted by the symbol 'mol'.
If in a given sample there are 1 mole particles or molecule then it means that the total number of particles or molecules in that sample is equal to the Avogadro's number and this number has a value of 
. Mole is used as a measurement unit for various types of microscopic particles like atoms, molecules, ions electrons.
Bb= hybrid black
bb= purebred white
Bb
bb
Bb
bb
50% black 50% white
