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WorksheetsBIO 30_Exam 3_Lec 11 C
Total questions: 20
Worksheet time: 20mins
Name
Class
Date
1.
for the number of gene pairs (n) to be valid:
a)
Alleles must have equal and addetive effects
b)
Genes assort independently
c)
Original parents are homozygous
d)
Original parents are heterozygotes
e)
Genes are linked
2.
Quantitative trait loci (QTL) are
a)
Chromosomal regions containing genes
b)
that interact with environmental factors
c)
and influence quantitative trait
d)
Chromosomal regions containing metal residue
e)
and influence qualitative trait
3.
Which is true for Quantitative Trait Loci (QTL)
a)
It is not a gene
b)
It is a map location for chromosomal region that associate with a trait
c)
It is a specific genetic sequence
d)
It is a map location for chromosomal regions that it reverses
4.
If QTL has been identified,
a)
it can be studied for the presence of a specific gene
b)
It can detect metal residue in the nucleus
c)
It can reposition the position of a specific gene
d)
none of the above
5.
Which is true for Quantitative Trait Loci (QTL)
a)
to localize chromosomal regions that significantly affect the variation of quantitative traits in a population
b)
this localization is important for the ultimate identification of responsible genes.
c)
to reverse the chromosomal regions that significantly affect the variation of quantitative traits in a population
d)
this localization is important for the ultimate identification gene reversals
6.
QTL analysis is a statistical method that links:
a)
Phenotypic data (trait measurement)
b)
Genotypic Data (molecular markers)
c)
Phenotypic data (selective epistasis)
d)
Genotypoc data (chromosomal bridges)
7.
attempts to explain the genetic basis of variation in complex traits
a)
Quantitative trait loci analysis
b)
Qualitative trait loci analysis
c)
none of the above
8.
Mapping quantitative trait loci analysis
a)
Use molecular markers to map the position of the QTLs
b)
Inheritance of a molecular marker is associated consistently with the inheritance of a trait.
c)
Uses gene reversals to map the position of the QTLs
d)
Inheritance of cesium residue is associated with trait inheritance
9.
Phenotypic variance (Vp) =
a)
Genotypic Variance (Vg)
b)
Environmental Variance (Ve)
c)
Genotype x Environmental interaction (Vg.e)
d)
Allelic Variance (Va)
e)
Reciprocal Variance (Vr)
10.
Measure of the variability of a trait and is the variance due to the phenotype (Vp)
a)
Phenotypic Variance
b)
Genotypic Variance (Vg)
c)
Environmental Variance (Ve)
d)
Genotype x Environmental interaction (Vg.e)
e)
Allelic Variance (Va)
11.
Due to different genotypes within the group and due to genetic differences among individuals
a)
Phenotypic Variance
b)
Genotypic Variance (Vg)
c)
Environmental Variance (Ve)
d)
Genotype x Environmental interaction (Vg.e)
e)
Allelic Variance (Va)
12.
non-genetic sources of variation, due to different envi of individuals such as temperature and nutrition
a)
Phenotypic Variance
b)
Genotypic Variance (Vg)
c)
Environmental Variance (Ve)
d)
Genotype x Environmental interaction (Vg.e)
e)
Allelic Variance (Va)
13.
Milk production in cows that are affected by genes and amount of feeds is expressed through
a)
Phenotypic Variance
b)
Genotypic Variance (Vg)
c)
Environmental Variance (Ve)
d)
Genotype x Environmental interaction (Vg.e)
e)
Allelic Variance (Va)
14.
Occurs when the relative effects of the genotypes differ among environement
a)
Phenotypic Variance
b)
Genotypic Variance (Vg)
c)
Environmental Variance (Ve)
d)
Genotype x Environmental interaction (Vg.e)
e)
Allelic Variance (Va)
15.
Components of Vg
a)
Vd (dominance)
b)
Ve (Epistatiss)
c)
Va (additive)
d)
Ve (environmental)
e)
Vp (phenotypic)
16.
one allele masks the expression of the other allele at a locus
a)
Vd (dominance)
b)
Ve (Epistatiss)
c)
Va (additive)
d)
Ve (environmental)
e)
Vp (phenotypic)
17.
alleles at different loci interact to determine the phenotype
a)
Vd (dominance)
b)
Ve (Epistatiss)
c)
Va (additive)
d)
Ve (environmental)
e)
Vp (phenotypic)
18.
consider the contribution of each contributing allele
a)
Vd (dominance)
b)
Ve (Epistatiss)
c)
Va (additive)
d)
Ve (environmental)
e)
Vp (phenotypic)
19.
average phenotype of F1 is closer to the dominant parent
a)
Dominance
b)
Epistasis
c)
Codominance
d)
Multiple alleles
20.
makes the graphe asymetric and skewed towards one parent
a)
Dominance
b)
Epistasis
c)
Codominance
d)
Multiple alleles
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