Best answer: What proportion of offsprings obtained from the cross AaBbCc AaBbCc will be completely heterozygous for all the genes segregating independently?

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What proportion of offspring should be Aabbcc or Aabbcc?

1664 , or 25% of their offspring are expected to have the same phenotype as parent 2. Their genotypes are AabbCC and AabbCc .

What proportion of offspring is heterozygous?

This gives us the predicted frequency of all of the potential genotypes among the offspring each time reproduction occurs. In this example, 100% of the offspring will likely be heterozygous (YG).

How many offspring does AaBbCc have?

Hints For Biology 101 Exam #4

No. of homologous chromosome pairs (heterozygous genes) No. of different gametes from each parent
2 (AaBb X AaBb) 4 (22)
3 (AaBbCc X AaBbCc) 8 (23)
4 (AaBbCcDd X AaBbCcDd) 16 (24)
20 pairs of chromosomes 1,048,576 (220)

What proportion of the progeny are AaBbCc?

Explanation: The probability of Aa from Aa x Aa is 1/2. The probability of bb from Bb x bb is 1/2. The probability of cc from Cc x Cc is 1/4. The probability that AaBbCc x AAbbCc will produce Aabbcc is (1/2)(1/2)(1/4) = 1/16.

What proportion of offspring are homozygous recessive for all four genes?

We know that for each gene, the fraction of homozygous recessive offspring will be 1/4. Therefore, multiplying this fraction for each of the four genes, (1/4) × (1/4) × (1/4) × (1/4), we determine that 1/256 of the offspring will be quadruply homozygous recessive.

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How many types of gametes are produced from genotype Aabbcc if genes B and C are completely linked?

Complete answer: AABbcc will produce 2 types of gametes which are as follows- ABc, Abc. The number of gametes formed is set by the number of heterozygous alleles present within the given genotype.

How many kinds of genotype will the offspring have?

Genotype is also used to refer to the pair of alleles present at a single locus. With alleles ‘A’ and ‘a’ there are three possible genotypes AA, Aa and aa. With three alleles 1, 2, 3 there are six possible genotypes: 11, 12, 13, 22, 23, 33.

How many offsprings will be formed in the mating between AaBbCc * AaBbCc?

Mating between the genotypes AAbbCCDd x AaBbCcdd produces 16 different types of offsprings. Types of gametes formed are determined by 2ⁿ where n stands for degree of heterozygosity.