Questions from Genetics


Q: A species of antelope has 20 chromosomes per set. The species

A species of antelope has 20 chromosomes per set. The species is divided by a mountain range into two separate populations, which we will call the eastern and western population. In a comparison of th...

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Q: Explain why molecular techniques were needed to provide evidence for the neutral

Explain why molecular techniques were needed to provide evidence for the neutral theory of evolution.

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Q: Prehistoric specimens often contain minute amounts of ancient DNA. What technique

Prehistoric specimens often contain minute amounts of ancient DNA. What technique can be used to increase the amount of DNA in an older sample? Explain how this technique is performed and how it incre...

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Q: From the results of the experiment of Figure 29.13,

From the results of the experiment of Figure 29.13, explain how we know that the kiwis are more closely related to the emu and cassowary than to the moas. Cite particular regions in the sequences that...

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Q: In Chapter 23, a technique called fluorescence in situ hybridization (

In Chapter 23, a technique called fluorescence in situ hybridization (FISH) is described. In this method, a labeled piece of DNA is hybridized to a set of chromosomes. Let’s suppose...

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Q: A team of researchers has obtained a dinosaur bone (Tyrannosaurus rex

A team of researchers has obtained a dinosaur bone (Tyrannosaurus rex) and has attempted to extract ancient DNA from it. Using primers for the 12S rRNA mitochondrial gene, they carried out PCR and obt...

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Q: Discuss how the principle of parsimony can be used in a cladistics

Discuss how the principle of parsimony can be used in a cladistics approach to constructing a phylogenetic tree.

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Q: A homologous DNA region, which was 20,000 bp in

A homologous DNA region, which was 20,000 bp in length, was sequenced from four different species. The following numbers of nucleotide differences were obtained: Construct a phylogenetic tree that de...

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Q: As discussed in this chapter and Chapter 27, genes are sometimes

As discussed in this chapter and Chapter 27, genes are sometimes transferred between different species via horizontal gene transfer. Discuss how horizontal gene transfer might lead to misleading resul...

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Q: What would you expect to be the minimum percentage of matching peaks

What would you expect to be the minimum percentage of matching peaks in an automated DNA fingerprint for the following pairs of individuals? A. Mother and son B. Sister and brother C. Uncle and nie...

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