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Worksheets3.1- Genes
Total questions: 17
Worksheet time: 13mins
what is a gene?
heritable factor that consists of a length of DNA and influences specific characteristics
the whole genetic information of an organism
occupies a specific position on one type of chromosome
determines differences in base sequences
the occupies a specific position on one type of chromosome
(a)
different forms of the same genes and occupy the same locus on a chromosome is called?
a gene
an allele
a mutagen
snips
how many alleles can occupy the locus of a chromosome?
three
four
two
one
how do alleles differ from each other?
a couple of bases
only by a few bases
many bases
the gene of a chromosome
Single Nucleotide Polymorphisms (SNPS) are positions in a gene where more than ... base is present
(a)
what is a mutation?
the heritable factor that consists of a length of DNA and influences a specific trait
different forms of the same gene and occupy the same locus
all the genes within an organism
random changes in DNA sequences that result in new alleles
... is where one base sequence is replaced by another base
(a)
all mutations are ... or ...
(a)
what are the causes of mutations that develop into gametes?
passed on to offspring
are harmful
cause genetic disease
are inherently bad for the human body
in sickle cell anemia, hbs causes ... to be in the 6th amino acid in polypeptide chain instead of ... acid
(a)
what is a genome?
random changes in the base sequence of DNA, producing new alleles
the heritable factor of DNA and influences a specific trait
entire base sequence of each of the DNA molecules in an organism
a specific position in a chromosome
in ... the genome is contained with the circular chromosome plus any plasmids present
(a)
in ... the genome is contained in the nuclear chromosomes + DNA in mitochondria and chloroplasts
(a)
in ... the genome is contained in nuclear chromosomes + DNA in mitochondria
(a)
what did the human genome project discover?
most of the genome is not actually transcribed
a completed sequence of DNA from a human
human have more genomes than prokaryotes
eukaryotes are double-celled
what are techniques for genome sequences?
fluorescent labelling
digital cameras
lasers
computers
supercomputers
