In peas, the smooth seed shape predominates over the wrinkled one. Heterozygous plants are self-pollinated

In peas, the smooth seed shape predominates over the wrinkled one. Heterozygous plants are self-pollinated. In F received 480 seeds. 1 How many gamete types the mother plant can form. 2 How many gamete types the parent plant can form. 3 How many F seeds can be heterozygous. 4. How many F seeds can produce non-splitting offspring. 5How many wrinkled seeds can be obtained in F?

Let us designate the gene that causes the development of smooth seeds in peas as G, then the gene that leads to the development of wrinkled seeds in peas will be g. For the phenotypic realization of the wrinkled form of seeds, homozygous representation of the g gene in the genotype is required. According to the introduced designations, heterozygous pea hybrids will be Gg, they will produce two types of germ cells: G and g. The offspring that can be obtained from self-pollination of such peas will be represented by the following options:

peas with smooth seeds (GG, 2Gg) – 75%;

peas giving wrinkled seeds (gg) – 25%.

the Gg mother plant is capable of producing two types of gametes, G and g;

the paternal plant, which is exactly the same Gg hybrids, is also capable of producing two types of gametes: G and g;

50% F1 seeds, or 480 * 0.5 = 240 seeds (Gg);

Homozygous seeds do not split, therefore 50% (gg and GG), that is, 240 seeds;

25%, or 480 * 0.25 = 120 seeds.



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