inheritance

Question 1

gene

Answer 1

section of DS DNA that encodes a particular trait and determines a characteristic

Question 2

allele

Answer 2

alternate form of gene

Question 3

locus

Answer 3

physical location of a gene on a chromosome

Question 4

phenotype

Answer 4

physical expression of gene

Question 5

genotype

Answer 5

genetic composition of an individual, the set of alleles an individual possesses

Question 6

dominant vs recessive allele

Answer 6

expreseed whether alone or as a pair
expressed only when there is no dominant allele

Question 7

homozygous heterozygous

Answer 7

individual posessing a pair of the same alleles/2 different alleles at a locus

Question 8

diploid haploid

Answer 8

containing 2 sets/1 set of chromosomes

Question 9

homologous chromosome

Answer 9

pairs of chromosomes that code for the same charactertistic, one inherited from each parent

Question 10

sister/non sister chromatids

Answer 10

identical halves of the same chromosome vs non identical halves on homologous chromosomes

Question 11

monogenetic

Answer 11

single genes where 1 loci is determining a trait

Question 12

consanguineous

Answer 12

related people mating

Question 13

proband

Answer 13

person through whom a genetic trait is being traced

Question 14

mendels law of inheritance (law of segregation)

Answer 14

cells contain 2 alleles
alleles separate during meiosis
gametes carry only 1 copy of each gene, completely random process

Question 15

why is human gene analysis complex

Answer 15

incomplete family records
small number of progeny
uncontrolled env

Question 16

examples of monogenic disorders

Answer 16

autosomal recessive: CF
autosomal dominant: huntingtons
Sex linked recessive: haemophilia
Sex linked dominant: rickets