Answer:
a) diversity
b) natural selection
c) living species
d) ancestral species
e) heritable variations in a population
f) greater reproductive success
g) an evolutionary adaptation
Darwin proposed a mechanism for evolution: natural selection, in which heritable traits that help organisms survive and reproduce become more common in a population over time.
See attached picture
Answer:
1 or 100%
Explanation:
Assuming that the allele B (brown) is dominant over the allele b, crossing the father and the mother:
BB x bb
Bb Bb Bb Bb (you can also see the Punnet's square)
All the offspring would exhibit the dominant phenotype which is brown. Hence, the probability of the offspring having brown eyes is 100% or simply 1.
100% of the offspring would have the genotype Bb, and the phenotype of the blue color.
Answer:
This phenomenon is called Niche Differentiation, it happens when several species live in the same area but different parts. Hope that helps! :)
Answer:
true
Explanation:
Cerebrospinal fluids is a colorless fluid that is secreted in the choroid plexus,and circulates in the ventricles system and sub -aranchinoid space of the brain and spinal cord. its provides nutrients to the surrounding neurons, cushions the effects of trauma, pressure, acts as buffer and provides protection through immune system .
it plays a vital role in regulating blood flow, through a process called cerebral auto regulation,This is needed to maintain efficient cerebral blood flow of oxygen and other metabolites, and withdraw of metabolic wastes from the brain.
in order to analyze it to diagnose some neurological diseases its sample is usually taken out in a process called lumbar puncture.
