# 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.