Question 31 of 33 Map do Sapling Learning An evolutionary tree is shown below. S

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Question 31 of 33 Map do Sapling Learning An evolutionary tree is shown below. Similar genes are represented by boxes. The letters X, Y, and z represent different species. Similarly colored genes designate genes present in the same species. Use the hypothetical evolutionary tree below to answer the following three questions. ancestrel gene spediaion 1 ilarly colored genes designate genes esent in the same species (species X, Y, or . For example, the pin Z genes - Za, duplication ZBi, and Zp2- are present in species Z speciation 2 (a) Which genes are homologs? (c) Which genes are paralogs? X and Zp za, and ZA2 (b) Which genes are orthologs? There is a hint availablel View the hint by clicking on the divider bar again to hide the hint Glose bottom divider on the and X O Previous Give Up & View Solution Check Answer 0 Next Exit P Hint

Explanation / Answer

Homolog gene is a gene related to a gene from an ancestor

ortholog genes are the genes in the species that have evolved through speciation

paralog genes are the genes those that come through duplication

a) Homologs genes

all of them

b) paralogs

Za and Zb2

Za and Zb1

Ya and Yb

Zb1 and Zb2

c) orthologs

Ya and X

X and Zb1

Yb and Zb2

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