C3 Independent Assortment of Genes

4 important questions on C3 Independent Assortment of Genes

Meiosis in a diploid cell of genotype A/a; B/b. The diagram shows how the segregation and assortment of different chromosome pairs give rise to the 1:1:1:1 Mendelian gametic ratio

Afb.

not every meiosis generates all 4 possible gamete types, but on average they do

What explains the size difference between mitochondrial genomes in humans and yeast?

Main difference: yeast has more nongenic DNA and introns, both have similar genes

Explain the variegation. What is cpDNA?

Variegation is due to segregati of the two types of chloroplasts in the cells: cells with more or less mutant (white, with mutation in chloroplast DNA: cpDNA) chloroplasts will be formed from initially heteroplastic cells (with both normal and mutant chloroplasts)
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Why is the mtDNA only inherited from the mother?

Egg cells are much larger than male sperm cells and contribute most of the cytoplasm including mitochondria. Furthermore, the up to 100 male mitochondria are specifically eliminated after fertilization by an unknown mechanism

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