Questions and answers by

Debbie Clarke

Questions (113)

Write a paper on Down Syndrome, no more than 3 pages
1. 1 answer
2. 104 views
Write a paper on Down syndrome , no less than three papers
1. 1 answer
2. 94 views
Information on HDL and LDL synthesis
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Information about HDL and LDL synthesis
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2. 110 views
Paper on HDL and LDL synthesis
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2. 117 views
RNA processing involves which of the following processes?Poly-A tail addition Capping Splicing All of the above
1. 13 answers
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A way to get more than one protein product out of the same gene is?Skipping splicing Alternate splicing Intron splicing All of
1. 13 answers
2. 134 views
The genetic code is __________.Degenerate Unambiguous Non-overlapping All of the above
1. 17 answers
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Cholecalciferol deficiency results in ________________.Rickets Osteomalacia Both a and b None of the above
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Glycosyl phosphatidylinositol (GPI) anchors _____________ to the __________________.Cholesterol; carbohydrates Protein;
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2. 130 views
Aquaporins facilitate the passage of ________across the plasma membrane.Glucose Water Sodium Potassium
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HDL has high amounts of apoprotein.True False
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Using Figure 1, determine the amino acid sequence of the resulting polypeptide sequence, ATG TAT GCG CTC CTT CCC.Met-Phe-Ala-Leu
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The resulting neural tube and brain defects from which of the following vitamins makes it especially important in prenatal care?
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The phospholipid effectively forms lipid bilayers and vesicles because of which of the following?The association of the
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Polyploidy in plants is considered as “good mutations” by agricultural breeders because:They have extra sets of chromosomes.
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Fatty fish, like salmon, and nuts are foods that increase the blood levels of LDL.True False
1. 1 answer
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Symptoms of scurvy include which of the following?Gingivitis Muscle weakness Joint aches All of the above
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The template DNA chain for RNA synthesis has the following order of bases, AGCTTCGAT. What will be the order of bases in the
1. 1 answer
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Which of the following results from the action of phospholipase A on phosphatidic acid?Diacylglycerol
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What happens during the denaturation step of PCR?The DNA nucleotides are broken apart. The DNA returns to its natural form. The
1. 2 answers
2. 162 views
Which of the following minerals may be found in nuts?Chromium Magnesium Copper All of the above
1. 1 answer
2. 101 views
Waxes are ____________________.Esters of long-chain alcohols with long-chain fatty acids Ethers of long-chain alcohols with
1. 1 answer
2. 133 views
During replication, Okazaki fragments elongate _____________________.Leading strand towards the replication fork Lagging strand
1. 2 answers
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Deficiency of which of the following vitamins causes slow blood coagulation?Vitamin B Vitamin K Vitamin C Vitamin D
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2. 148 views
Phospho-regulation functions in which process?Apoptosis Signal transduction Growth and cell cycle progression All of the above
1. 1 answer
2. 98 views
Which of the following enzymes separates the two strands of DNA during replication?Gyrase Topoisomerase Helicase DNA polymerase
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2. 194 views
__________________ is a trace element?Calcium Magnesium Chloride Manganese
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2. 75 views
Most colour-blindness is sex-linked because of which of the following?The presence of pigment genes on the X-chromosome The
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2. 144 views
Kinases are enzymes that ____________________.Transfer phosphate groups to macromolecules Remove phosphate groups from
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2. 165 views
Which of the following statements is true?The fully demethylated head of a-tocopherol increases its activity. The fully
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2. 116 views
Which site of tRNA molecule hydrogen bonds to a mRNA molecule.Codon Anticodon 5’ ends of the tRNA molecule 3’ ends of the
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2. 129 views
The AUG start codon codes for which of the following amino acids?Methionine Valine Phenylalanine Glycine
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2. 121 views
Vitamin D helps in the absorption of which of the following elements?Iodine and Calcium Iron and Iodine Calcium and Iron Calcium
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2. 113 views
RNA polymerase I may be found in the ____________________.Nucleolus Nucleoplasm Cytoplasm All of the above
1. 1 answer
2. 113 views
Describe the gene and chromosomes mutation that can occurs in DNA
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2. 111 views
Chose a vitamin. Outline the structure, source , function and deficiency associated with this vitamin
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2. 97 views
Give the result of a deficiency of one mineral
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What are trace elements? Give one source
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What are the major minerals? Give one source
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2. 88 views
Give the base pairs found in DNA?
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2. 93 views
Define DNA and RNA and give two differences between them?
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2. 82 views
What are nucleic acids?
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What are cyclic nucleotides?
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What are the three components of a nucleotide
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Name two head group found in glycerophosphalipids
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2. 92 views
What is the significance of the glycerol backbone in the glycerophosphalipids?
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2. 132 views
What is the head group found in cardiolipin?
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To which part of the glycerol- based phospholipid are the different head groups attached?
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2. 89 views
What is the name of the parent compound for the glycerol-based phospholipids?
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Describe the subdivisions of prophase of meiosis I. Give named and diagrammed examples for the structures that may be present in
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2. 113 views
What are the expected phenotypic ratios from the following cross:Tt Rr YY Aa × Tt rr Yy Aa, where T = tall, t = dwarf, R =
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2. 126 views
What are the expected phenotypic ratios from the following cross:Tt Rr YY Aa × Tt rr Yy Aa, where T = tall, t = dwarf, R =
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2. 151 views
In the chinchilla, albino coat color is a recessive trait. Researchers transplanted ovaries from an albino female chinchilla
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In humans, the allele for brown eye color (B) is dominant to blue eye color (b). If two heterozygous parents produce seven
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2. 146 views
In corn, purple kernels (D) are dominant over yellow (d) and smooth kernels (G) are dominant over shrunken (g). and ear of corn
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2. 109 views
What are the expected phenotypic ratios from the following cross:Tt Rr YY Aa × Tt rr Yy Aa, where T = tall, t = dwarf, R =
1. 1 answer
2. 126 views
mtDNA and cpDNA is associated with the study of _________ inheritance.extranuclear epigenetic Mendelian Darwinian Nuclear
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A human XXXY cell would contain how many Barr bodies?0 1 2 3 4
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Embryonic stem cells (ESC) are ______________.totipotent multipotent unipotent pluripotent none of the above
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What two mechanisms are responsible for the development of Trisomy 21?Translocation and duplication Inversion and nondisjunction
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The transfer of genetic material between two different species is called __________.vertical gene transfer horizontal gene
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2. 154 views
In which of the following do the bacteria have to be in physical contact for gene transfer to occur?Transduction Transformation
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One map unit is equal to which of the following?100 nucleotides 1% of the chromosome 1% mutation rate 1% recombination rate None
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The synaptonemal complex is formed during ____________.Leptotene Prophase II Telophase I Prophase I None of the above
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2. 74 views
When testing for linkage using a chi-square analysis, what should be the hypothesis?That the traits are linked. That the traits
1. 1 answer
2. 150 views
Single-stranded unpaired DNA extensions formed by endonucleases upon cleavage are known as _______________.Sticky ends. Blunt
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Positive interference on a chromosome is best defined as:The repression of recombination during mitosis. The inhibition of one
1. 1 answer
2. 132 views
A trait that is only expressed on the sex chromosome is known as _________.temperature-sensitive alleles sex-influenced
1. 3 answers
2. 163 views
Which process may be used in gene mapping?Transformation Transduction Conjugation A and B B and C
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Coat colour in rabbits and human blood groups are both examples of ____________.multiple allele systems epistatic interactions
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Which of the following statements is NOT true about genomic imprinting?It is re-established in germ cells It is established
1. 1 answer
2. 118 views
What happens during the denaturation step of PCR?The DNA nucleotides are broken apart. The DNA returns to its natural form. The
1. 1 answer
2. 186 views
In which of the following is the male of the species the homogametic sex?X-Y system Z-W system X-O system Haplodiploid system
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2. 79 views
Bacteria reproduce by ___________.Mitosis Meiosis Binary fission Reductive division All of the above
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Genetic drift refers to changes in allele frequencies in a population due to _________.Stabilization. Random fluctuations.
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2. 102 views
A reciprocal cross is used to determine which of the following?If a trait is autosomal or sex-linked The number of autosomal
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A testcross is always conducted between an individual whose genotype is unknown and which of the following?A heterozygous
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If an organism contains two identical alleles for the same trait, it is said to be which of the following?Cross-fertilized
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In a Chi square test of a genetic cross there are n different phenotypic classes in the offspring. What is the value for the
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Which of the following is the most likely explanation for a high rate of crossing-over between two genes?The two genes are far
1. 1 answer
2. 178 views
Which of the following methods of calculating probability is used if the order of a specific number of events occurring in the
1. 5 answers
2. 187 views
The basic unit of heredity is called the _____________.protein trait gene enzyme nucleotide
1. 1 answer
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The DNA sequence recognized by an endonuclease is called a(n) ____________.Ligation site Insertion site Cleavage site
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2. 183 views
Which of the following best describes the term genetic variation?Differences in inherited traits within individuals of a
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2. 141 views
Which type of change in chromosome structure is most likely to be detrimental?Deletions. Inversions molecular genetics.
1. 1 answer
2. 113 views
The primary advantage of sexual reproduction is:It maintains the chromosome number for the species. It is necessary to protect
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2. 126 views
The primary advantage of sexual reproduction is:It maintains the chromosome number for the species. It is necessary to protect
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2. 126 views
Explain the heterozygote advantage of the sickle cell β-globin allele in areas where malaria is prevalent
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2. 100 views
What is extranuclear inheritance? Describe three examples. Explain the variegated phenotype in Mirabilis jalapa (four-o- clock
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2. 176 views
You want to clone the mouse β-globin gene into an expression vector. Outline the steps you would take to insert this gene into
1. 1 answer
2. 118 views
In an East Indian mango, three genes are linked on the same chromosome. Heavy bloom is dominant to light bloom, skin that is
1. 1 answer
2. 267 views
An individual has the following reciprocal translocation:a. What would be the outcome of alternate segregation? b.What would be
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An individual has the following reciprocal translocation:What is the name of the structure formed during meiosis, as the
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The basic diploid chromosome number in Chrysanthemum is 18. A new species of Chrysanthemum is found that has four complete sets
1. 29 answers
2. 198 views
Which of the following is not true about inversion?Inverted chromosomes are generally viable Inversion can cause chromosome
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In maternal effect, the individual's phenotype ___________.is determined by its genotype is determined by the mother's phenotype
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Consider this sequence A—•—B —C—D—E—F, be a DNA sequence where • is the centromere. Which of the following will
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A chromosome with a very short arm and a very long arm is referred to asa.Metacentric b.Telocentric c.Acrocentric
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________ genomes consist of multiple sets of chromosomes from multiple species.a.Monoploid b.Autopolyploid c.Polyploid d.
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2. 102 views