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WorksheetsLife Science MPRCS 7th Grade
Total questions: 21
Worksheet time: 28mins
Which of these traits is controlled by multiple alleles?
Straight Hair
Hair color
Blood type
None of these
The order of the bases along a gene determines the order in which?
Chromosomes are arranged in the nucleus
The order of amino acids are put together to form a protein
Genes are arranged in the DNA
Cheeseburger
Cancer is a disease in which cells?
Grow and divide unnaturally
Die before they can mature
Stop producing DNA
Die during mitosis
which branch of science includes the study of plants animals and the human body
Life Science
People Science
Animal Science
Physical Science
which of these is an example of the benefits of genetic engineering
analyzing karyotypes and pedigree charts
crossbreeding to create disease-resistant crops
creating human insulin to treat people with diabetes
growing a new plant from cutting
A carrier is a person who has?
two recessive alleles for a trait
two dominant alleles for a trait
more than two alleles for a trait
one recessive and one dominant allele
sex-linked genes are on
the X and Y chromosome
all twenty-three pairs of chromosomes
X chromosome
none of these
5
during DNA replication adenine always pairs with what
Guanine
Cytosine
Thymine
Trees
how can mutations affecting skin be harmful to an animal
it can make the animal more visible to its prey and predators
it can make the animal is resistant to certain diseases
it can make the animal resistant to drugs
the animal can live longer
what does messenger RNA do during protein synthesis
Nothing
copies that coded message and carries it to the nucleus
carries amino acids and adds them to the growing protein
copies the coded message from the DNA and carries it to the cytoplasm
Cancer can spread when cells break off a tumor and are carried through the body by the (a)
when many genes control a trait or emotion with large number of (a)
the carrier of a trait controlled by a (a) allele does not express the trait
the genetic code is found in the order of nitrogen (a) along a gene
breeders use a technique called (a) to cross genetically different individuals
A mutation in a sex cell can be passed to offspring
False
True
Even if a gene has multiple alleles, a person cannot have more than three of those alleles
True
False
Transfer RNA carries coded messages from the nucleus to the cytoplasm
False
Tree
cancerous cells grow in an abnormal way
True
False
inbreeding decreases the chance of an organism receiving two recessive genes for a genetic disorder
True
False
Contrast the effects of harmful and helpful mutations.
