Natural selection is a gradual process where biological traits become more or less common in a population depending on the usefulness of the trait.
C. Over time, species evolve by adapting to their environment.
Insecticide resistance developed through d. natural selection.
The number of chromosomes
Answer:
The presence of an additional chromosome
Explanation:
Look at "pair" 21. See how there are THREE chromosomes instead of TWO? Normally, there would only be two chromosomes in each pair but this karyotype shows a trisomy (see def. below) of the 21st pair. This was caused by a nondisjunction mutation of the 21st pair. The is also the karyotype of a person with Down's Syndrome.
Definition of Trisomy:
A condition of the presence of three chromosomes in a pair instead of two. This normally causes developmental irregularity.
D) take in nutrients because endocytosis is the process when a cell takes in food
Answer:
it okay
Explanation:
can you help me with this question According to Frost in his poem "The Road Not Taken," what kind of difference did taking one road over another road make? A. It made a good difference, B. It made a bad diference, c. Frost does not say
