Hemophilia is an X-linked condition caused by a recessive gene.
Indicate whether the statement is true or false
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Question 2) The X and Y chromosomes are considered the ________ chromosomes.
Fill in the blanks with correct word
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Question 3) For which of the following are newborn infants not routinely screened at birth?
A) PKU
B) color blindness
C) imperforate anus
D) congenital hip dysplasia
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Question 4) Matching
A) Independent assortment
B) Chromosome segregation
C) Chromosome crossover
D) Gene recombination
19) Distribution of chromosomes to different gametes.
20) Results in chromosomes that have mixed contributions from each parent.
21) A particular gene's allele received by a gamete has no influence over selection of a different gene's allele.
22) Means by which genes trade places, some maternal and some paternal on each chromosome.
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Question 5) Alleles may code for alternative expressions of a genetic trait.
Indicate whether the statement is true or false
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Question 6) Matching
A) Sex-linked inheritance
B) Polygenic inheritance
C) Dominant-recessive inheritance
D) Multiple-allele inheritance
E) Incomplete dominance
14) The dominant gene is expressed when present; the recessive gene is expressed only in the absence of the dominant gene.
15) The heterozygote has a phenotype intermediate between those of the homozygous dominant and homozygous recessive.
16) Inheritance of the ABO blood group type is an example of this type of inheritance.
17) Inheritance that results in continuous or qualitative phenotypic variations between two extremes; an example is skin color.
18) Inherited traits determined by genes on the X or Y chromosomes.
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Question 7) Hereditary characteristics are transmitted to offspring by genes.
Indicate whether the statement is true or false
(
Question 8) Matching
A) Allele
B) Dominant
C) Heterozygous
D) Autosomes
10) Genes for the same trait that have different expressions.
11) The gene allele that suppresses or masks the expression of the other allele.
12) Situation in which an individual has different alleles making up the genotype for a particular trait.
13) Chromosomes regulating most body characteristics.
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Question 9) Gene mutations in the sex chromosomes of the human would tend to become visibly expressed ________.
A) more frequently in females
B) more frequently in males
C) equally frequently in both sexes
D) in neither males or females
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Question 10) Matching
A) Cystic fibrosis
B) Achondroplasia
C) Albinism
D) Tay-Sachs disease
E) Huntington's disease
5) Lack of skin pigmentation.
6) Rare type of dwarfism resulting from an impaired ability of the fetus to lengthen long bones by endochondrial ossification.
7) An unremitting, fatal nervous system disease involving degeneration of the basal nuclei.
8) A condition of drier excessively sticky mucus production.
9) A disorder of brain lipid metabolism.
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