BIO CH 2: Part 2: Sex-Linked

Question 1

__: these are traits that are controlled by genes found on the sex chromosomes.
The X and Y chromosomes are not homologous because they can’t fit the same amount of info.

Answer 1

Sex- linked trait

Question 2

Male Inherit X from __ and Y from __

Answer 2

mother and father

Question 3

Recessive traits include:

Answer 3

red-green, color blindness, muscular dystrophy, hemophilia (blood clotting factors are missing, bleeding disorder).

Question 4

__: to show graphically the patterns of genetic inheritance within a family. Can help predict genotypes for each person for a particular trait. Like a family tree with genetics.

Answer 4

Pedigree

Question 5

If your are (female or male), one pair (23rd) is not an identical looking pair. These determine the sex of an individual and are called the sex chromosomes.

Answer 5

male

Question 6

22 of theses pairs are called __, they have matching gene loci, are the same size, and look identical.

Answer 6

autosomes

Question 7

True or False: It is impossible to live with more or less one chromosome.

Answer 7

False

Question 8

__: the failure of homologous chromosomes to separate properly during meiosis. Results in Gametes with either an extra chromosome (aka:__) or a missing one (aka:__).

Answer 8

• Nondisjunction
• trisomy= down syndrome ( Developmental +health issues) 47 chrom ( extra #21)
• monosomy= turner syndrome(underdeveloped ovaries) 45 chrom

Question 9

nondisjunction can be seen using a __ which is a chart of chromosomes paired up based on their length and location of their centromere.

Answer 9

Karyotype

Question 10

__: 47 XXY, tall, thin, underdeveloped male. trisomic

Answer 10

Klinefelter syndrome