sex determination Flashcards
what are the one pair of chromosomes called that determine the persons sex
sex chromosomes
what does variation mean
offspring is a result of both genetic and environmental factors
what was Dawins theory of evolution
random mutations result in variation which results in some organisms being better adapted to the environment
and would compete (suvival of the fittest) thoso who were better adapted would survive and the others would die causing the more desirable characteristic would be more common
what is Lamarck’s theory of evolution
mutations adaptations are a result of environment affecting characteristics inherited by offspring: not random.
what evidence is there to prove Darwin’s theory correct
antibiotic-resistant bacteria as not all bacteria were killed ans the most resistant will reproduce
why should you finish a course of antibiotics
to make sure that you kill all the bacteria and to also make sure that the bacteria do not become resistant and reproduce making the condition worse
what is a species
Organisms are considered to be of the same species if they can produce fertile offspring.
what is selective breeding
breeding organisms that have desired characteristics to produce offspring in which they are more pronounced.
