1 / 56
A. The observable characteristics of an organism is referred to as the ________
2 / 56
B. In order to have four toes in guinea pugs, there must be at least ____________ contributing alleles present
3 / 56
C. _________ disproved the Hyppocrate’s theory.
4 / 56
D. The following are patterns of sex chromosome distribution except _____.
5 / 56
E. In human males, the sex chromosomal constitution is _________
6 / 56
F. Two individuals heterozygous at certain loci are crossed, given that the number of loci = n, an expression that represent the number of different types of gametic fusion is given by _________
7 / 56
G. If the genes for a trait occur in both sexes, but the expression of the trait is different in the sexes, the trait is said to be __________
8 / 56
H. In Nilsson- Ehle’s work with the colour of wheat kernel, a cross between pure breeding dark red-kerneled and white kernel parents were all of intermediate red colour. In the F2 generation however, one- sixteenth of the progeny has the same dark red colour of the Pgeneration parents. This shows that the trait is controlled by ____.
9 / 56
I. What is the probability that the first child of Aa x aa parents will have a recessive genotype?
10 / 56
J. The following statements are pararallel between the genetics and cytological facts that form the basis of the chromosome theory except ____.
11 / 56
K. A cross between a male chicken and a normal female which results in two female to one male instead of the expected 1:1 ratio among progeny of this cross is a proof that the male has a chromosomal constitution of ____.
12 / 56
L. A phenomenon whereby the gene for a trait is located on the X or Y chromosome is known as ________
13 / 56
M. If two coins are thrown simultaneously, what is the probability that the first coin will be head and the second tail?
14 / 56
N. The performation theory postulated that a miniature human being called a ___________ is present in the sperm.
15 / 56
O. _____ provided the most convincing proof of the theory that genes are on chromosomes.
16 / 56
P. A sex abnormally in man in which the affected females are shorter than average, have webbing of the neck, and mentally retarded is known as ____.
17 / 56
Q. A genetic experiment involves a trihybrid cross : AaBbCc x AaBbCc. What is the number of genetic fusions?
18 / 56
R. A genetic experiment involves a trihybrid cross : AaBbCc x AaBbCc. How many genes are involved in this experiment?
19 / 56
S. In sex determination system, an XXY individual is phenotypically a ________
20 / 56
T. Boveri was able to show that the abnormal development of a dispermic embryo was the result of the __________ chromosome distribution.
21 / 56
U. The diploid number of chromosomes in humans is _________
22 / 56
V. The symbols used to represent the alleles of genotypes of an individual are called __________
23 / 56
W. Which of the following statements best describe aneuploidy?
24 / 56
X. ______ made an elaborate drawing of homunculus.
25 / 56
Y. A situation in which alleles of one gene separate into gametes randomly with respect to the alleles of other genes refers to the law of _________
26 / 56
Z. The division of chromosomes in mitosis as well as their constancy was described by _____.
27 / 56
AA. Who advanced the theory that the cell nucleus must contain the hereditry materials? I. Strasburger, II. Edward van benden, III. Hertrig , IV. Roux
28 / 56
AB. In which of the following sex abnormallies in man are those affected recognized as females but are poorly developed?
29 / 56
AC. One of the most clear – cut piece of evidence ilIustrating sex – linked inheritance was reported by ___________
30 / 56
AD. What is the probability that if a farmer would put his hand in a bowl containing the red seeds from a bowl containing a cross of Rr X Rr, he would pick up a seed which is Rr in genotype?
31 / 56
AE. In Mendel’s experiment on garden peas, tall ( TT ) in dominant over dwarf ( t ). In a TT x tt cross, the chances of obtaining a tall plant is _________
32 / 56
AF. The sex which has only one X or Z chromosome is described as being _________
33 / 56
AG. If a farmer put his hand in a bowl containing the red seeds from a cross of Rr x Rr, what is the probability that he would pick a seed which is RR in genotype?
34 / 56
AH. According to Darwin, exact miniature replicas called ________ of the body parts and organs are carried in the blood stream to be assembled in the gametes.
35 / 56
AI. The most prominent adherent to the inheritance of acquired characteristics in recent times was ________
36 / 56
AJ. Genes located on the Y chromosome can specifically be referred to as __________ genes.
37 / 56
AK. In sex determination system, an XO individual is phenotypically a _________
38 / 56
AL. An individual having two unidentical alleles of a given gene is said to be _________ for that gene.
39 / 56
AM. _____ postulated the preformation theory.
40 / 56
AN. In a heterozygote, the allele that is not expressed is the ________ allele
41 / 56
AO. The stage at which chromosomes move to the opposite poles during cell division is called __________
42 / 56
AP. A cross between an offspring and one of its parents is known as a ____________
43 / 56
AQ. ____________ is regarded as the father of Genetics.
44 / 56
AR. A condition in which more than one sperm fertilizes an egg is called __________
45 / 56
AS. In drosophila, non-disjunction cannot occur between ____.
46 / 56
AT. Albinism is an autosomal trait in human. The allelic symbol ( A ) is for __________
47 / 56
AU. Whose theory stated that “small representative of all parts of the parental body are concentrated in the semen”?
48 / 56
AV. Genes in the X-chromosome forming the barr body is __________
49 / 56
AW. Where a gene is not sex – linked, it must therefore be __________
50 / 56
AX. The following are true of genetics except ____.
51 / 56
AY. It is assumed that skin colour in man is determined by a maximum of _________ additive loci.
52 / 56
AZ. In a genetic cross, the parents are symbolized P while the second generation is symbolized as __________
53 / 56
BA. Albinism is an autosomal trait in human. The allelic symbol ‘a’ of an albino shows that the genotype is __________
54 / 56
BB. The following are true of chromosomes except _____.
55 / 56
BC. A cross in which the traits of the male and the female are reversed is known as a ___________ cross.
56 / 56
BD. _________ advanced the theory of evolution.
Rate this quiz