ul he I0nowing populations have at least some individuals that possess the Genot

Question

ul he I0nowing populations have at least some individuals that possess the Genotype +/+ for the Alu repeat? a) Polish b) Mediterranean (c) African d) all of these True = a, False = b 39. Alleles, genes, and loci are different names for the same thing. 40. A single gene in a given population, can only have two alleles. 41. A testcross can be used to determine whether an individual is homozygous dominant or heterozygous. Multiple Choice 42. Genes come in different versions called... a) alleles b) loci c) genotypes d) chromosomes e) genomes

Explanation / Answer

Ans.39. False. Alleles are alternative (two or more) forms of a gene, present in same region on a chromoome. Genes are defined as DNa segments that code for a particular functional molecule, either RNA or protein. Locus is a region on DNA, in which genes are present.

Ans.40. False. A gene present in a given population can have two or more than two alternative forms or alleles.

Ans.41. True. Test cross can be done between an individual with dominant phenotypic character with individual having recessive phenotypic character, to check whether the individual having dominant phenotype is heterozygous or homozygous.

Ans.42. Genes come in different versions or forms are known as alleles. Alleles are formed due to muation in one form of gene and show alternative forms of genes. Hence, the correct answer is option (a).

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