chapter 15-- non mendelian genetics

Question 0

law of independent assortment

Answer 0

alleles sort independently of each other during meiosis

Question 1

law of segregation

Answer 1

homologous chromosomes separate during gamete formation

Question 2

wild type

Answer 2

the phenotype most often encountered in nature

Question 3

sex linked genes

Answer 3

genes that are located on the sex chromosomes

Question 4

SRY gene

Answer 4

a gene found on the y chromosome

Question 5

x-linked gene

Answer 5

genes found on the x chromosome

Question 6

x-linked recessive disorders

Answer 6

recessive disorders most often found in men

Question 7

barr body

Answer 7

the condensed inactive form of an x chromosome

Question 8

linked genes

Answer 8

genes that are located on the same chromosome

Question 9

genetic recombination

Answer 9

results in offspring that doesn’t look like wither parent

Question 10

crossing over

Answer 10

genes move from one chromosome to another homologous chromosome

Question 11

cM

Answer 11

centimorgan, one map unit, or 1% recombination frequency

Question 12

nondisjunction

Answer 12

homologous chromosomes do not separate as they normally would in meiosis

Question 13

down syndrome

Answer 13

three copies of chromosome 21

Question 14

klinefelter syndrome

Answer 14

males that have an extra x chromosome (xxy)