Genetics Question Preview (ID: 43999)
Basics Of Genetics.
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The passing of traits from parents to offspring is called
a) probability
b) heredity
c) recessive
d) meiosis
Genes carry information that determines
a) alleles
b) ribosomes
c) chromosomes
d) traits
Which of the following list the items in order from largest to smallest?
a) gene, DNA, chromosome, cell
b) chromosome, cell, DNA, gene
c) cell, chromosome, DNA, gene
d) cell, chromosome, gene, DNA
____ is another name for homozygous, and ____ is another name for heterozygous.
a) hybrid, purebred
b) purebred, hybrid
c) dominant, recessive
d) different, same
Which of the following best describes the difference between the meanings of phenotype and genotype?
a) a phenotype is the entire genetic makeup of an organism, whereas a genotypes is the combination of genes for one specific tra
b) a phenotype is the appearance of an organism, where as a genotype is the genetic makeup
c) A phenotype is the result of the environment on appearance, whereas a genotype is the result of genes on appearance.
d) A phenotype is the result of heterozygous alleles, whereas a genotype is the result of homozygous alleles.
DNA, made up of nucleotides, is responsible for:
a) providing food for the cell
b) transporting water
c) genetic coding of traits
d) digestion
Different forms of the same genes are expressed as
a) different traits
b) same traits
c) death
d) identical twins
Siblings look different even though they come from the same two parents. This is because:
a) All of their traits come from the father
b) All of their traits come from the mother
c) Mother and father's traits combine in the same way for each child
d) Mother and father's traits combine in the different ways for each child
Part of a mouse's tail is cut off as the mouse escapes from a cat. The mouse later reproduces. Which explanation best describes why the mouse's offspring have long tails?
a) long tails are a dominant trait
b) short tails do not appear in the first generation or the second generation
c) cutting the tail of the mouse changed its genes
d) long tails are a recessive trait
Traits such as an individual's skin, hair, and eye color result from
a) one gene acting alone
b) one allele from each parent acting together
c) several genes acting together
d) one dominant allele
If you cross a white flower with the genotype pp with a purple flower with the genotype PP, the possible genotypes in the offspring are
a) PP and pp
b) all Pp
c) all PP
d) all pp
Phenotype is the organism's physical appearance while _______ is the organism's genetic make-up.
a) genetic file
b) genotype
c) gender type
d) physical characteristics
Two plants are crossed, resulting in offspring with a 3:1 ratio for a particular trait. This suggests
a) that the parents were both homozygous dominant
b) that the parents were both heterozygous
c) that the parents were both homozygous recessive
d) one parent was homozygous dominant and one homozygous recessive
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