Biology Game Question Preview (ID: 52439)


Kryotype. TEACHERS: click here for quick copy question ID numbers.

The normal human karyotype contains:
a) 44 chromosomes
b) 23chromosomes
c) 46 chromosomes
d) none of the choices

Indicate the origin of each chromosome present in each pair.
a) Both are from the father (paternal)
b) Both are maternal origin
c) One maternal and one paternal
d) all choices are correct

Indicate the number of pairs of autosomal chromosomes in a normal human karyotype
a) 45 chromosomes
b) 46 chromosomes
c) 23 chromosomes
d) 22 pairs

The presence of two homologous sex chromosomes (XX) and 44 autosomes means that the individual is a
a) normal male
b) normal female
c) abnormal male
d) abnormal female

The presence of Y sex chromosome means that the sex of the individual is:
a) male
b) female
c) male with feminine characteristics
d) none of the choices

The number of chromosomes in the karyotypes of two normal brothers is the same, since:
a) Both are for normal humans
b) normal humans has the same number of chromosomes
c) same species have same number of chromosomes
d) all choices are correct

The chromosomal formula of a normal girl is:
a) 44,XX
b) 46,XY
c) 46,XX
d) non of the choices

The chromosomal formula of a Trisomy 21 boy is:
a) 46,XY
b) 45,X
c) 44,XY
d) 47,XY,+21

Individuals having XXY sex chromosomes are:
a) All choices are correct
b) abnormal individual (have a chromosomal abnormality)
c) Sterile
d) Males

The chromosomes of normal human beings:
a) carry the genetic informations
b) may have two sister chromatids
c) transfer the genetic hereditary traits to the fetus
d) all choices are correct

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