Lesson 11

Question 1

Autosomes

Answer 1

-Homologous chromosomes that are same or similar chromosomes in males and females.

Question 2

How autosomes do humans have

Answer 2

44

Question 3

Sex chromosomes-

Answer 3

Chromosomes that are different in males and females.

Question 4

How sex chromosomes do humans have

Answer 4

2

Question 5

Polygenic Traits-

Answer 5

Traits that are produced through the interaction of several genes.

Question 6

Turner Syndrome-

Answer 6

Only gets 1 sex chromosome. X. Appear female but sex organs do not develop at puberty.

Question 7

Insert a karyotype of a person with Turner Syndrome

Answer 7

45X or 45XO

Question 8

Klinefelter Syndrome-

Answer 8

Get two X’s and 1 Y. Appear male but are sterile. 47XXY

Question 9

Multiple alleles-

Answer 9

A gene with more than two alleles.

Question 10

Sex-Linked Genes-

Answer 10

A gene located on one of the sex chromosomes.

Question 11

Chromosomal Mutations-

Answer 11

Involve segments, whole or sets of chromosomes.

Question 12

Codominance-

Answer 12

Both alleles are active so both are expressed.

Question 13

Incomplete dominance-

Answer 13

The active allele does not completely dominate over the inactive allele so the outcome is in between.

Question 14

Sex-Influenced Traits-

Answer 14

A trait that is caused by a gene whose expression is different in males and females.

Question 15

Male Pattern Baldness-Controlled by a gene with two alleles

Answer 15

BB=Normal
Bb-Men=Bald, Women=Normal
bb=Bald in both (rare)

Question 16

Mutations-

Answer 16

Mistakes in gene information transfer.

Question 17

Translocation-

Answer 17

Part of one nonhomologous chromosome breaks off and attaches to another.

Question 18

Germ mutations-

Answer 18

Mistakes that affect reproductive cells.

Question 19

Somatic mutations-

Answer 19

Mistakes that affect body cells.

Question 20

Duplication-

Answer 20

A segment is repeated.

Question 21

Point mutations-

Answer 21

Changes that affect one single protein.

Question 22

Deletion-

Answer 22

The loss of part of a chromosome.

Question 23

Nondisjunction-

Answer 23

Failure of chromosomes (meiosis I) or chromatids (meiosis II) to separate properly and the results are gametes with too few or too many chromosomes

Question 24

Down Syndrome-Trisomy 21-

Answer 24

Failure of chromosome 21 to separate during meiosis. (autosome) 47 XY +21

Question 25

Frameshift mutations-

Answer 25

A protein is inserted or deleted so it changes the sequence completely.

Question 26

A Blood carries A antigen=

Answer 26

IAIA, IAi

Question 27

B Blood carries B antigen=

Answer 27

IBIB, IBi

Question 28

AB Blood carries A and B=

Answer 28

IAIB

Question 29

O Blood carries no antigen=

Answer 29

ii

Question 30

Rh+

Answer 30

if Rh+,Rh+ or Rh+,Rh-

Question 31

Rh-

Answer 31

only if Rh-,Rh-

Question 32

What is the genotype of a universal donor? (Include Rh factor)

Answer 32

-O