Mendel's Recombination

Duration: 33

Genre: Educational

Format: 16mm

Color: Color

Sound: sound

Description: Uses crosses involving two pairs of genes in plants, in guinea pigs, and in chickens to illustrate recombination. Stresses the part played by chance in each cross. Defines allele, the F2 generation, heterozygosity and homozygosity. Crosses a black shorthaired guinea pig with a white longhaired one and displays the offspring through the F2 generation. Points out that hundreds of pairs of heterozygous genes produce the many kinds of egg and sperm, which result in all humans being unique. Concludes that: the genotype results from the assemblage of many genes; that genes from one parent find an allele from the other parent and so consist of pairs of genes in the child; and finally that genes are the basis of individuality, of development, and of life itself.

Complete Record: Uses crosses involving two pairs of genes in plants, in guinea pigs, and in chickens to illustrate recombination. Stresses the part played by chance in each cross. Defines allele, the F2 generation, heterozygosity and homozygosity. Crosses a black shorthaired guinea pig with a white longhaired one and displays the offspring through the F2 generation. Points out that hundreds of pairs of heterozygous genes produce the many kinds of egg and sperm, which result in all humans being unique. Concludes that: the genotype results from the assemblage of many genes; that genes from one parent find an allele from the other parent and so consist of pairs of genes in the child; and finally that genes are the basis of individuality, of development, and of life itself.NOTE: Two (or more) records have been merged together to create this data.