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Dihybrid cross for 2 sex linked traits

Dihybrid Crosses and Gene Linkage Topic 10. 1: Dihybrid cross of unlinked autosomal genes A cross between dihybrid cross for 2 sex linked traits organisms involving two genes is called a dihybrid cross. Note the genes described are carried on separate chromosomes, the genes are unlinked, and will therefore sort independently of each other during meiosis. 2: Autosomes vs sex chromosomes Autosomes are numbered red sex chromosomes are lettered blue.

3: Crossing over and exchange of alleles Crossing over between non-sister chromatids of a homologous pair of chromosomes during prophase I can result in exchange of alleles. 4: What is a linkage group? When two heterozygotes are mated in a normal dihybrid cross with independent assortment of alleles, the expected ratio in the offspring is 9:3:3:1. 6: Can you explain the results? Have a look at the observed results of the dihybrid cross involving two heterozygotes shown below.

Which of the offspring are recombinants and why were they produced? Place mouse pointer on the figure to see the answer to the question. Dihybrid Crosses and Gene Linkage Topic 10. 1: Dihybrid cross of unlinked autosomal genes A cross between two organisms involving two genes is called a dihybrid cross.

Note the genes described are carried on separate chromosomes, the genes are unlinked, and will therefore sort independently of each other during meiosis. 2: Autosomes vs sex chromosomes Autosomes are numbered red sex chromosomes are lettered blue. 3: Crossing over and exchange of alleles Crossing over between non-sister chromatids of a homologous pair of chromosomes during prophase I can result in exchange of alleles. 4: What is a linkage group?

When two heterozygotes are mated in a normal dihybrid cross with independent assortment of alleles, the expected ratio in the offspring is 9:3:3:1. 6: Can you explain the results? Have a look at the observed results of the dihybrid cross involving two heterozygotes shown below. Which of the offspring are recombinants and why were they produced? Place mouse pointer on the figure to see the answer to the question. Dihybrid Crosses and Gene Linkage Topic 10. 1: Dihybrid cross of unlinked autosomal genes A cross between two organisms involving two genes is called a dihybrid cross.