Biology Game Grade 8 (Karyotype) Question Preview (ID: 52553)


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

The two sister chromatids are joined by:
a) Centrosome
b) Centromere
c) cytoplasm
d) All choices are correct

The normal human being karyotype contains :
a) 46 chromosomes
b) 44 autosomal and 2 sex chromosomes
c) 23 pairs of chromosomes
d) All choices are correct

T he Y sex chromosome:
a) Indicate the feminine characteristics
b) Its presence indicates that the individual is a female
c) Indicates the masculine characteristics
d) All choices are correct

A klinfelter individual has:
a) XXY sex chromosomes
b) 47 chromosomes (all chromosomes)
c) 44 autosomal chromosomes
d) All choices are correct

The chromosomal formula of atrisomy 13 girl is:
a) 47, XY,+13
b) 47,XX,+13
c) 47,XXY
d) 45,XX,-13

A turner syndrome female has:
a) 46 chromosomes
b) 47 chromosomes
c) 45 chromosomes
d) None of the choices

Knowing that the number of chromosomes (2n) in a horse is 64, then the value of n is:
a) 30
b) 20
c) 22
d) 32

The number of chromosomes is represented by 2n since:
a) All chromosomes are originated from the mother
b) Half of the chromosomes (n) are paternal and half are maternal
c) All chromosomes are paternal
d) All choices are correct

The normal male human gamete (sperm) contains:
a) 22 chromosomes + X or 22 + Y
b) 22 chromosomes + XY
c) 22 chromosomes + XX
d) All choices are correct

The chromosomes of a normal human being:
a) Present in the nucleus of cells
b) Carry the genetic information
c) Carry different genes
d) All choices are correct

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