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Harlamova29_29 [7]
3 years ago
10

What is the relationship between dna and chromosome?

Biology
1 answer:
WINSTONCH [101]3 years ago
3 0

<span>DNA are made up of genes and genes are made up of chromosomes.</span>

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For three traits inherited in a dominant/recessive pattern, what is the probability of an offspring in a trihybrid cross between
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Explanation: Let A, B and C represent the dominant alleles and a, b and c represent the recessive alleles. The genotype of each of the parent will be AaBbCc since it has been said to be heterozygous for all the three traits. There are eight (8) possible different types of gametes from each of the genotype. This can be calculated using 2^n where n is the number of heterozygous loci.

The number of heterozygous loci in the genotype AaBbCc is three (3). 2^3 = 8. The gametes are;

ABC

ABc

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Out of these offsprings, twenty-three (23) are expected to be heterozygous at two loci as boldly shown in the attached image.

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