Gene Linkage

Question 1

The diagnosis of Down syndrome is made by examining the individuals …

Answer 1

karyotype

Question 2

Chromosome abnormalities result from nondisjunction, illustrating the importance of the orderly ….. and …. of genetic material during …. .

Answer 2

seperation, distribution

Meiosis 1

Question 3

Genetic recombination occurs during the

Answer 3

prophase of meiosis 1

Question 4

Many chromosomes are not involved in the human population because of legal …. of the … during early ….

Answer 4

Abortion embryo development

Question 5

trisomy and monosomy can result from accidents that occur during meiosis during

Answer 5

nondisjunction of chromosomes

Question 6

Half babies are male and female because of the … of the X and Y chromosome during …. meiosis

Answer 6

segregation, male

Question 7

each person has at most … …. per trait

Answer 7

2 alleles

Question 8

The time to observe sizes and shapes of chromosomes is during ..

Answer 8

metaphase

Question 9

The resulting aniplody of a person with Klinefelters disease is caused by

Answer 9

nondisjunction

Question 10

Half of all human cancers have … associated with their cells

Answer 10

p53

Question 11

Sex in humans is determined by a gene on the …

Answer 11

Y chromosome

Question 12

A linkage group goes with a … of genes on the same chromosome

Answer 12

group

Question 13

Down syndrome is caused by an extra

Answer 13

21st chromosome

Question 14

Recombination is most likely something that are ….

Answer 14

far apart

Question 15

Nondisjunction is caused by

Answer 15

chromosomes that do not separate

Question 16

Processes of Karyotyping

Answer 16

1. Examine chromosomes in metaphase
2. Add Giesma or fluoresant dye in order to stain the band on a chromosome, and identify the banding pattern
3. They are set up in a karyogram, in which the chromosomes are set up based on size and position of centromere
4. observed for chromosomal abnormally