sex determination

Question 1

what are the one pair of chromosomes called that determine the persons sex

Answer 1

sex chromosomes

Question 2

what does variation mean

Answer 2

offspring is a result of both genetic and environmental factors

Question 3

what was dawins theory of evolution

Answer 3

random mutations result in variation which results in some organisms being better adapted to the environment
and would compete (survival of the fittest) those who were better adapted would survive and the others would die causing the more desirable characteristic would be more common

Question 4

what is lamarcks theory of evolution

Answer 4

mutations adaptations are a result of environment affecting characteristics inherited by offspring: not random.

Question 5

what evidence is there to prove darwins theory correct

Answer 5

antibiotic-resistant bacteria as not all bacteria were killed ans the most resistant will reproduce

Question 6

why should you finish a course of antibiotics

Answer 6

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

Question 7

what is a species

Answer 7

Organisms are considered to be of the same species if they can produce fertile offspring.

Question 8

Organisms are considered to be of the same species if they can produce fertile offspring.

Answer 8

breeding organisms that have desired characteristics to produce offspring in which they are more pronounced.