Two fruit flies with normal wings are crossed. Of the offspring, 88 have normal wings and 32 have vestigial wings. What is the genotype of the normal winged parents?
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In a particular type of plant, red flower color is dominant…
In a particular type of plant, red flower color is dominant to white. If a homozygous red-flowered plant is crossed with a white-flowered plant, what will be the ratio of the off-spring from this cross?
Which reaction has a product of oxygen?
Which reaction has a product of oxygen?
A frameshift mutation that changes every codon that follows…
A frameshift mutation that changes every codon that follows could result from:
When the mRNA carries any of these three codons: UAA, UGA…
When the mRNA carries any of these three codons: UAA, UGA, UAG, translation will:
A permanent change in base sequence of a DNA molecule that i…
A permanent change in base sequence of a DNA molecule that is a result of DNA replication is called a(n):
According to the Octet Rule, except for the first electron s…
According to the Octet Rule, except for the first electron shell, how many electrons are present in a stable or full energy level (shell) for the common biological atoms?
What determines the mass number of an atom?
What determines the mass number of an atom?
What wavelength of light energy does chlorophyll most absorb…
What wavelength of light energy does chlorophyll most absorb?
The part of the prokaryotic DNA gene that is required for th…
The part of the prokaryotic DNA gene that is required for the start of transcription is called a(n):