Genetics- Test
Q1. How is it possible for brown eyed parents to have a blue
eyed child. Which law does it illustrate?
Q2. Give two differences of the following
a) Monohybrid
cross and Dihybrid corss
b) Gene and
Allele
Q3. Explain law of Dominance?
Q4. Fill the blanks
a) On the
basis of the position of the centromeres, the chromosomes may be
________,____________,_________ and __________.
b) The diploid
number in humans is ____________.
c) Chromosomes
are made of ___________
d) DNA is
composed of _________and __________
e) Meiosis
occurs in ____________cells only.
f) __________is
surrounded by radiating aster rays
g) In
___________phase chromosomes becomes
aligned to equator
h) Chromosomes
gets transformed into a chromatic network in ________phase.
i) _________is
the resting phase between two cell divisions
j) ___________is
known as division of cytoplasm
k) _________and
________are sex linked diseases
l) Dihybrid
ration of phenotypic F2 generation is ___________
m) A
nucleotide is composed of _______, ________ and __________
n) During
meiosis the chromosomes duplication is followed by ____ nuclear divisions.
o) The base pairs are found in DNA are ________,
_________and ____________
Q5.Define the following
a) Homozygous
gene b) Phenotype c) Hybrid
d) Like begets like
Q6.Predict the Genotype and Phenotype of the following
a) When one
parent is homozygous black (BB) and other is homozygous brown(bb).
b) When one
parent is heterozygous black(Bb) and other is homozygous brown(bb).
Q7. Why recessive genes show up later during F2 generation?
Q8. Why did mendel chose garden pea for his experiments?
Q9. Give F2 generation of Tall Red (TTRR) and dwarf white
(ttrr) flower?
Q10. Choose the odd one out?
a) Metaphase
, interphase, prophase, anaphase,
Telophase
b) DNA,
Nucleosomes, Genes, Nitrogenous Base, Ribosomes
Q11. Give 3 differences between
a) Mitosis and
Meiosis
b) Cell
division in Animal and Plants
Q12 Give one word for the following
a) Sudden
change in one or more genes or in the number of chromosomes
b) Small
differences between individuals due to inheritance
c) The suppressed
allele
d) Chromosomes
other than the pair of sex chromosomes
e) Same number
of chromosome pairs maintained in daughter cells
MCQ’s
A. Alternative forms of a gene are called
_____________.
1.
|
loci
|
2.
|
multiples
|
3.
|
chromosomes
|
4.
|
alleles
|
B.
Which of these is homozygous recessive?
1.
|
Ss
|
2.
|
ss
|
3.
|
SS
|
4.
|
s
|
C.
What will be the genotypic ratio of the cross between Rr and rr?
1.
|
1:2:1
|
2.
|
3:1
|
3.
|
1:1
|
4.
|
1:1:1
|
D.
The component of a chromosome that controls heredity is ____.
1.
|
proteins
|
2.
|
histones
|
3.
|
DNA
|
4.
|
RNA
|
F.
Homologous chromosomes which are similar in both the sexes are called ______.
1.
|
sex
chromosomes
|
2.
|
autosomes
|
3.
|
allosomes
|
4.
|
androsomes
|
G What type of bond connects base pairs?
A. Covalent bond
B. Ionic bond
C. Hydrogen bond
H.What does the term genome refer to?
A. All of the proteins expressed in an organism
B. The complete set of information in an organism's DNA
C. The set of genes turned on in an organism, tissue, or cell
I. The structure that
allows each duplicated eucaryotic chromosome to be pulled into a daughter cell
is called a:
A. centromere.
B. telomere.
C. mitotic spindle.
D. histone.
J. The complex of DNA
and protein in chromosomes is called:
A. centromeres.
B. histone.
C. centrosome.
D. chromatin.
