Most new alleles probably axis from_. a rearrangement of existing alleles into n

Question

Most new alleles probably axis from_. a rearrangement of existing alleles into new combinations b crossing over between homologous chromosomes c large-scale changes in chromosome structure small-scale mutations in DNA independent assortment of nonhomologies chromosomes Most copies of rare recessive alleles exist in_. a female's heterozygotes c male's d males and females equally e homozygotes the high incidence of Ellis van Craved syndrome among the Old onto Amish population is caused by ____ a artificial select too inbreeding c a population bottleneck random mating sexual selection

Explanation / Answer

6] Most new alleles probably arise from

Answer= d] Small scale mutations in DNA

explination =Occasionaly DNA mutations occure in germ cells - cells destined to become egg or sperm cells

In this case the DNA mutation is copied into every new cell of growing embryo following fertilization

IN this way new DNA variants are passed onto the next generation

If the mutation affects a gene it will result into new version of that gene a new allele

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