Visible genetic traits include which of the following?
Correct answer: D. All of these
- A. Hair color
- B. Eye color
- C. Number of limbs
- D. All of these
Explanation
Correct option is D. The correct answer is "all of these." Visible genetic traits include Hair color, Eye color, and Number of limbs. All of these traits are influenced by our genetic makeup and can be observed and passed down from one generation to another. Hair color and eye color are determined by specific genes that control the production and distribution of pigments in the body. Different combinations of these genes lead to variations in hair and eye colors among individuals. The number of limbs, though mostly constant within a species, is also determined by genetic factors during early embryonic development. While the typical human has four limbs (two arms and two legs), there are rare genetic conditions that can lead to the development of additional or fewer limbs. These conditions are caused by genetic mutations affecting limb development.
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About Inheritance
Mendel's laws explain segregation, independent assortment and the prediction of genetic ratios using alleles, genotypes and phenotypes. The chapter also covers linked genes, recombination and crossing over during meiosis, then applies pedigree reasoning to X-linked recessive traits, which show different inheritance patterns in males and females.
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