When members of the gene pair carried by an individual are not alike, the individual is said to be ____________________
Fill in the blank(s) with correct word
heterozygous
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The ubiquitin-proteasome pathway
_____ is used to regulate expression of a number of cell surface receptors. _____ requires only one molecule of ATP to target a protein. _____ targets proteins in a stepwise fashion via ubiquitin ligase adding ubiquitin residues to the protein. _____ is used to digest macromolecules. _____ does not destroy the ubiquitin moiety, but rather cleaves it off for reuse.
Genetic studies of an animal show that eye color is controlled by an autosomal gene with the dominant allele (R) for red
eye color and the recessive allele (r) for yellow eye color. A second autosomal gene has the dominant allele (T) for paws with thumbs and the recessive allele (t) for paws without thumbs. The genetic cross RRTT x rrtt creates offspring with genotype RrTt. One of those dihybrids is mated in a testcross (RrTt x rrtt). Based on the principle of independent assortment, the testcross should produce offspring with the phenotype ratio ____.
a. 3 red-eyed with thumbs : 1 yellow-eyed without thumbs b. 1 red-eyed with thumbs : 1 yellow-eyed with thumbs: 1 red-eyed without thumbs: 1 yellow-eyed without thumbs c. 1 red-eyed with thumbs : 1 yellow-eyed without thumbs d. 9 red-eyed with thumbs : 3 yellow-eyed with thumbs: 3 red-eyed without thumbs: 1 yellow-eyed without thumbs e. 3 yellow-eyed with thumbs : 1 red-eyed without thumbs
In knockout experiments,
a. genes are removed from chromosomes. b. normal genes are replaced physically by mutated genes. c. wild type genes are mutated to prevent their transcription or translation. d. mRNAs are prevented from attaching to ribosomes. e. the protein products of specific genes are inactivated.
Why is the abundance of atmospheric nitrogen impossible for plants to use? Describe three processes that convert nitrogen sources into a usable form for plants
What will be an ideal response?