Sat Sep 29 4:36 PM stest 1b.pdt ome Tools Willam S. Kug, M.. test 1b.pdf GENETIC

Question

Sat Sep 29 4:36 PM stest 1b.pdt ome Tools Willam S. Kug, M.. test 1b.pdf GENETICS FINAL . Is the trait illustrated in the pedigree: a) dominant recessive Is the trait illustrated in the pedigree x-linked b autosomal In the F2 generation of a cross, a rakio of 9:17would be indicative of which type of inheritance? a) codominance 2 genes b) independent assortment 3 genes lack of dominance 1 gene epistasis 2genes e) epistasiS3 genes 10. In humans, individuals heterozvgous for the M and N antigern ens on the cell surface. This mechanism genes have bo of inheritance is ca a) complete dominance c) epistasis incomiete dominance co-dominance D Twin studies were performed to determine if there was a genetic cause for a specific human disease. Monozygotic and dizygotic twins had identical concordance values. This means: .- The diseáse is probably caused bý the environment. The disease is caused by.a gene or genes. 2When two star eyed Drosophila flies were crossed, the oftsring ere 1/3 wild type eye:2/3 star eyed f1les. This crOSS illustrates a) incomplete c) epistasis e b) polygenic inheritance lethality MacBook Air

Explanation / Answer

Answer:

9.

A ratio 9:7 would be indicative the type of inheritance is epistasis 2 genes.

Hence,option(d) is correct.

10.

This mechanism of inheritence is called codominance because both gene express themselves completely.

Hence,option(d) is correct answer.

11.

If monozygotic and dizygote twins had identical Concord value.It means the diseas is caused by environment.

Hence, option (b) is correct.

12.

Given ratio is 2/3:1/3 or 2:1

This ratio is found due to lethal gene.therefore it illustrate lethality.

Hence,option(d) is correct.

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