Class 12 · Principles of Inheritance and Variation

Gamete Types in Heterozygous Organisms — NEET Biology

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A diploid organism is heterozygous for 4 loci, how many types of gametes can be produced?

NCERT Biology · Class 12 · Chapter 4 · Paragraph 105
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Which of the following statements are correct regarding a monohybrid test cross and its underlying genetic principles? S1: A monohybrid test cross determines the genotype of an organism exhibiting a dominant phenotype. S2: The phenotypic ratio obtained in a monohybrid test cross is always 3:1. S3: Heterozygous parents produce two types of gametes in equal proportions, crucial for the outcome of a test cross. S4: If all progeny of a test cross display the dominant phenotype, the unknown parent is homozygous dominant. S5: The 1:1 phenotypic ratio in a test cross is primarily explained by the Law of Independent Assortment.

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