BSC 1010 Chapter Notes - Chapter 10: Dihybrid Cross, Haemophilia B, Barr Body

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Published on 3 Jul 2019
School
FIU
Department
Biological Science
Course
BSC 1010
Professor
BSC 1010
Chapter Ten
Review Questions
1.
The alleles an individual receives at the fertilization is
called the
genotype
2.
Average heights of American men and women have
increased steadily since the 1940s. What is the best
explanation for this observation?
environmental changes like
improvements in diet and
medical care
3.
A Barr Body is a(n)
inactive X chromosome.
4.
A cross between homozygous purple-flowered and
homozygous white-flowered pea plants, results in the
offspring with purple flowers. This is an example of
dominant allele.
5.
Crossing over is more likely to separate genes on a
chromatid if they are
far apart.
6.
Diagrams of gene order and spacing on chromosomes are
linkage maps.
7.
A dihybrid cross is a mating between two individuals that
are each _________ for _______ gene (genes).
heterozygous; two
8.
A dihybrid cross of linked genes theoretically could give a
phenotypic ratio of
3:1.
9.
The dominant allele
is so named due to its
ability to mask the
expression of the other
allele.
10.
The fact that during gamete formation, the segregation of
alleles for a gene on one chromosome does not influence
the segregation of alleles for a gene on another
chromosome is the Mendel's law of
independent assortment.
11.
The fact that the two alleles of each gene are packaged
into separate gametes because they move apart from each
other during gamete formation is the Mendel's law of
segregation
12.
Females who are carriers for hemophilia
A. theoretically pass the allele for hemophilia to half of
their daughters.
B. All of the answer choices are correct.
C. theoretically pass the allele for hemophilia to half of
their offspring.
B. All of the answer choices
are correct.
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