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- 1. Multiple Choice
Histones areproteins wound up in DNAcritical to maintaining the shape of chromosomesaid in the tight packing of DNAall of these - 2. Multiple ChoiceWhen DNA is in its less coiled, "relaxed," state, between cell divisions, it is calledautosomeschromatidchromatincentromere
- 3. Multiple ChoiceAutosomes arechromosomes found in autotrophs, onlychromosomes that automatically correct all errors in the DNAchromosomes that determine traits other than sexchromosomes that determine the sex of the individual
- 4. Multiple ChoiceThe structure that holds two chromosomes together until they separate for cell division is thechromatidchromatincentromerecytoplasm
- 5. Multiple ChoiceThe structures labeled B arecentrioleschromatidscentromereschromopheres
- 6. Multiple ChoiceThe structure labeled A is a(n)chromatidcentriolecentromerechromophere
- 7. Multiple Choice
Chromosomes that have the same sequence of genes and the same structure are ___________.
homologous chromosomes
alleles
phenotypes
genotypes
- 8. Multiple ChoiceWhich of the following statements about homologous chromosomes is correct?Each gene is at the same locus on both chromosomes.They are two identical copies of a parent chromosome which are attached to one another at the centromere.They come from the same parent.They are chromosomes that have identical genes and alleles.
- 9. Multiple ChoiceHow many autosomes are there in a human sperm?1222346
- 10. Multiple ChoiceBased on the Karyotype shown, at which chromosome pair can we identify a genetic disorder?Chromosome pair 5sex chromosomesChromosome pair 21There are no chromosomal disorders
- 11. Multiple ChoiceWhich statement is NOT true about KaryotypesChromosomes (pairs 1-22) are arranged by sizeSex chromosomes are found at the endA normal karyotype has 46 chromosomes or 23 pairsHaving missing or extra chromosomes does not indicate a disorder
- 12. Multiple ChoiceAn abnormality in which homologous chromosomes fail to separate properly is calledglue syndromesticky-osisnondisjunctiontelophase
- 13. Multiple ChoiceA nondisjunction resulting in three chromosomes in one position is calledmonosomydisomytrisomypolysomy
- 14. Multiple ChoiceA nondisjunction resulting in one chromosome in one position is calledmonosomydisomytrisomypolysomy
- 15. Multiple ChoiceIf a gene is found only on the X chromosome and not the Y chromosome, it is said to be what?sex-linked traitpolygenic traitcodominant traitincomplete dominance trait
- 16. Multiple Choice
The position of a gene on a chromosomes is the _______.
allele
gene locus
- 17. Multiple Choice
What is a nucleosome?
All the DNA and histones in a cell
chromatin that has been condensed
a histone with two coils of DNA wrapped around it
- 18. Multiple ChoiceGenes that are located on the same chromosomehuman genome projectpedigreebiologylinked genes
- Answer choicesTagsAnswer choicesTags