The four blood types result from various combinations of the three different abo alleles.

1 answer:

7 0

The statement is true, the four blood types result from various combinations of the three different ABO alleles, giving rise to A, B, AB and O as the four universal blood types.

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Deep ocean currents are a result of:

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C) global wind patterns

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Gray seed color in peas is dominant to white. Assume that Mendel conducted a series of experiments where plants with gray seeds

bazaltina [42]

Answer:

(a) Gg × Gg; (b) genotypic = 1:2:1, phenotypic = 3:1

Explanation:

a) A cross between two gray seeded plants produces progeny with gray and white seeds in 3:1 ratio (302:98=3:1). This means that the parent plants are heterozygous and each has at least one recessive allele. If the allele "G" is responsible for gray seed and the allele "g" imparts white color to the seeds, the genotype of the heterozygous parents would be "Gg".

b) A cross between two heterozygous gray seeded parents would produce progeny in following ratio:

Genotype ratio= 1 GG: 2 Gg: 1 gg

Phenotype ratio= 3 Gray: 1 white