6 - definitions of dna stuff

Question 1

whats DNA

Answer 1

• a chemical that’s all the genetic material in cells are made from
• contains coded info that determine what inherited characteristsics you get
• found in the nucleus in chomosones
• polymer - 2 strans coiled to make a double helix

Question 2

whats a gene

Answer 2

• small section of DNA found on a chromosone
• each gene codes for an amino acid - protein

Question 3

whats a genome

Answer 3

• entire set of genetic material in an organism

Question 4

whats a nucleotide

Answer 4

• the repeating unit that makes up the polymers in DNA
• base, sugar, phosphate (at the top)
• complementary base pairing - ATGC

Question 5

what are gametes

Answer 5

• only have 23 chromosones soi when fusion takes place they have the right amount
• to make gametes cells divide by MEIOSIS

Question 6

whats your genotype

Answer 6

• combination of alles you have which express your phenotype

Question 7

whats an allele

Answer 7

different versions of the same gene eg blue eyes and brown eyes

Question 8

whats diploid and haploid

Answer 8

haploid - half the genetic info - 23 chromosones eg sperm or egg cells
diploid - full set of genetic info - 46 chromosones eg muscle cells

Question 9

whats your phenotype

Answer 9

the characteristics you get from your phenotype