Answer: The correct answer for the blank is -
1.) A. Phenotype
B. Genotype
Phenotype corresponds to the physical appearance of a particular characteristic or morphological form in an individual.
Example - Hair color, plant height, skin color.
On the other hand, genotype corresponds to the genetic makeup of an individual. It is depicted by the gene that is present in the individual organism. Example- Genotype for dwarf height in pea plant is 'tt', which carries both recessive gene variants.
Thus, we can physically see the phenotype of a trait, but not the genotype.
Answer: There is a 50% chance that the offspring will inherit Huntington's disease
Explanation:
Huntington's disease is expressed by a dominant allele.
Since the father is heterozygous for Huntington's disease, his genotype would be as follows:Hh
Even though he carries a normal allele, the dominant allele is disease causing and thus masks the effects of the normal allele, therefore he expresses the disease.
The mother does not have Huntington's because she is homozygous recessive, in other words, she carries 2 copies of the normal alleles.with the genotype hh.
If you do a punnet square, and you cross the mother and father, the following genotypes can be produced:
Hh, Hh, hh, hh
Therefore, there's a 50% chance that the offspring will inherit the disease causing allele and 50% chance that the offspring will not inherit it.
True: <span>DNA is the shortened form of the term ‘Deoxyribonucleic acid’
Deoxyribonucleic corrosive is a string like chain of nucleotides conveying the hereditary guidelines utilized as a part of the development, improvement, working and propagation of all known living beings and numerous infections
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