AP BIOLOGY

Detailed explanation-1: -During sexual reproduction, traits from parents are transmitted to offspring. These are combinations of male and female parent. This is called heredity.

Detailed explanation-2: -It is passed down from the father in the sperm. The DNA in these cells is haploid i.e. n. When they fertilize it becomes 2n. This ensures that the genetics from both the parents is passed on without disturbing the chromosome number.

Detailed explanation-3: -Autosomal dominant traits pass from one parent onto their child. Autosomal recessive traits pass from both parents onto their child. Autosomal refers to the 22 numbered chromosomes as opposed to the sex chromosomes (X and Y).

Detailed explanation-4: -Codominance: It is a type of dominance where the offspring show similarity to both the parents and it is due to the blending of alleles. When both the parental characters are exhibited by the F1 generation, this is called codominance. The offspring is going to be a combination of both the parent.