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WorksheetsGenetics quiz (topic3)
Total questions: 15
Worksheet time: 30mins
The size of human genome (in millions of base pairs) is
5
32
3200
150000
Sister chromatids of a chromosome are:
identical
similar but having different alleles
similar but having different loci
Have different loci but the same alleles
The exact location of a gene in chromosome is called:
allele
locus
genotype
genome
Carrier of sickle-cell anemia allele has immunity against:
Covid-19
HIV
Cystic fibrosis
Malaria
Rice (Oryza sativa) compared to human (Homo sapiens) has:
More chromosomes and more genes
Less chromosomes and less genes
Less chromosomes and more genes
More chromosomes and less genes
In prophase I of meiosis a unique process ensures:
Identical daughter cells
Chromosome number reduction
Crossingover
Random assortment of homologous chromosome pairs
Mother's age and chance of child's chromosomal abnormalities have
positive correlation
negative correlation
positive causality
negative causality
Normal male karyogram contains
1 X chromosome
2 Y chromosomes
46 autosomes
22 autosome pairs and 2 sex chromosome pairs
Autosomal monosomies
don't cause diseases
are always embryonal lethal
are survivable only if it affects chromosomes 13, 18 or 21
are not possible due to high precision of meiosis
Down syndrome is caused by
a single nucleotide change
a single aminoacid change
having more proteins than necessary
a gene being deleted
Which of these types of cell divisions are very similar (mechanically)
mitosis and meiosis I
mitosis and meiosis II
meiosis I and meiosis II
all three cell division types are mechanically the same
Women with karyotype 45,X-
are embryonal lethal (miscarried)
have male phenotype and genitalia
are sterile
are indistinguishable from 46,XX women
In humans gender of the offspring is determined by
mother's alleles
father's alleles
both parents equally
random genetic event during pregnancy
Choose the impossible phrase:
Dominant locus
Recessive allele
Heterozygote male
Recessive phenotype
Regarding loci on X chromosome, men are called
semizygous
hemizygous
homozygous
heterozygous
