Which of the following does not accurately describes a typical human karyotype?

A22 pairs of autosomal chromosomes and 1 pair of sex chromosomes are pictured.
B46 pairs of chromosomes are arranged from largest to smallest.
C23 pairs of chromosomes are arranged from largest to smallest.
D2 sex chromosomes and 44 autosomal chromosomes are pictured

Question

25-10-2016
Biology

Answered

Which of the following does not accurately describes a typical human karyotype?

A22 pairs of autosomal chromosomes and 1 pair of sex chromosomes are pictured.
B46 pairs of chromosomes are arranged from largest to smallest.
C23 pairs of chromosomes are arranged from largest to smallest.
D2 sex chromosomes and 44 autosomal chromosomes are pictured

Verified Answer :

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Anonymous Anonymous · Answer 1 · 2016-10-25T16:25:41-04:00

A typical human karyotype has 23 types of chromosomes arranged from largest to smallest. In males and females 22 of these chromosomes look exactly the same and they are called autosomes. The 23rd pair of chromosomes is the sex chromosome which differentiates males from females. Females have 2 copies of the x chromosome. Males have a copy of both x and y chromosome to make the 23rd pair.

Chromosomes can also have abnormalities that result to different conditions and identifiable traits. A most common chromosomal abnormality is the condition called Down Syndrome, where chromosome 21 has a third copy because of an abnormal cell division.