Patterns Of Inheritance II (Lecture 10)

Question 1

In what scenario of inheritance does two possible alleles exist for a trait and no dominance exist?

Answer 1

Incomplete Dominance

Question 2

When do Heterozygous individuals express both alleles simultaneously, resulting in a 3rd phenotype?

Answer 2

Incomplete Dominance

Question 3

In what scenario of inheritance does more than two possible alleles exist for a trait that yields multiple possible phenotypes?

Answer 3

Multiple Alleles

Question 4

Produced by red blood cells to recognize similar blood types

Answer 4

Antigens

Question 5

Protein molecules produced by white blood cells that reject foreign blood types

Answer 5

Antibodies

Question 6

Any change that occurs in the DNA sequence of a chromosome

Answer 6

Mutation

Question 7

Environmental conditions that cause mutations

Answer 7

Mutagens

Question 8

A photographic display of the chromosomes from a cell

Answer 8

Karyotype

Question 9

An abnormal chromosome number

Answer 9

Aneuploidy

Question 10

A term indicating that a chromosome is missing

Answer 10

Monosomy

Question 11

A term indicating that an extra chromosome is present

Answer 11

Trisomy

Question 12

The removal or loss of a piece of a chromosome

Answer 12

Deletion

Question 13

A segment is repeated twice within a chromosome

Answer 13

Duplication

Question 14

A segment of a chromosome is removed, rotated 180 degrees, and reinserted

Answer 14

Inversion

Question 15

An exchange of genetic material occurs between two non-homologous chromosomes

Answer 15

Translocation

Question 16

Describe the lethality: Monosomies of any autosome.

Answer 16

Lethal

Question 17

Describe the lethality and condition: Trisomy of autosomes.

Answer 17

Somewhat lethal. Results in disorders like Down Syndrome

Question 18

Describe the lethality and condition: Monosomy. YO.

Answer 18

Missing a second sex chromosome. Lethal.

Question 19

Describe the lethality and condition: Monosomy. XO.

Answer 19

Missing a second sex chromosome. Non-lethal. Gives rise to a female with Turner’s Syndrome

Question 20

Describe the lethality and condition: Trisomy. XXY. Male Result

Answer 20

An extra sex chromosome. Non-lethal. Gives rise to a male with Klinefelter’s Syndrome

Question 21

Describe the lethality and condition: Trisomy. XXY. Female Result.

Answer 21

An extra sex chromosome. Non-lethal. Gives rise to a female with Triplo-X or Metafemale Syndrome

Question 22

Describe the lethality and condition: Trisomy. XYY.

Answer 22

An extra sex chromosome. Non-lethal. Gives rise to a normal male with no disorder. (Jacob’s Syndrome)