Chromosome mutations

Question 1

Chromosomal mutation:

Answer 1

the change in a chromosome number as a result of an error in meiosis

Question 2

Autosome:

Answer 2

gene is located on a non-sex chromosome

Question 3

Chromosomal mutation occurs from either ___ non-disjunction or ___ non-disjunction

Answer 3

autosomal, sex chromosome

Question 4

Non-disjunction:

Answer 4

the failure of one or more pairs of homologous chromosomes or sister chromatids to separate normally during nuclear division, usually resulting in an abnormal distribution of chromosomes in the daughter nuclei

Question 5

Aneuploidy:

Answer 5

the condition of having an abnormal number of chromosomes in a haploid set

Question 6

Human karyotype:

Answer 6

typically contains 22 pairs of autosomal chromosomes and one pair of sex chromosomes. Females contain two X chromosomes (denoted 46,XX) and males contain both and X and Y chromosome (denoted 46,XY)

Question 7

Allosome:

Answer 7

sex chromosome