Describe the three types of tetrads that can be formed when a diploid yeast sporulates to form haploid gametes
What will be an ideal response?
Parental ditypes (PD) contain four haploid cells with the same alleles seen in the parental class.
Nonparental ditypes (NPD) contain four recombinant haploid cells because the two parental alleles have recombined to form a nonparental combination of alleles.
Tetratype tetrads (TT) contain four different kinds of haploid cells: two parental spores and two recombinant spores. When two genes are not linked, tetratypes arise when a crossover occurs between one of the two genes and its centromere.
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The ____________________ of STR alleles reveals how often they are observed in a population
Fill in the blank(s) with correct word
What evolutionary advantage do prokaryotes have over eukaryotes?
What will be an ideal response?
Free radicals contain unpaired electrons in their outermost energy shell, so they react readily with other atoms or molecules to reach a more stable state. Which of the following could potentially be a free radical?
A) Magnesium (atomic number 12 ) B) Neon (atomic number 10 ) C) Helium (atomic number 2 ) D) Fluorine (atomic number 9 )
A population of plants comes in two flower colors: blue and white. Crossing two blue-flowered plants produces mostly blue-flowering offspring and some white-flowering offspring
Crossing two white-flowered plants produces only white-flowering offspring. This indicates that the white-flowering plants are A) homozygous dominant for the flower color allele. B) homozygous recessive for the flower color allele. C) mutating. D) heterozygous for the flower color allele. E) in equilibrium.