Question

7 multiple choice 10 points which genotype can not taste ptc? tt tt tt 8 multiple choice 10 points what are used to determine the probabilities of offspring having certain genotypes? karyotpes phenotypes alleles punnett squares 9 true or false 10 points the dominant trait is always more common. true false

Explanation:

• Question 7: The ability to taste PTC (phenylthiocarbamide) is a trait. The allele for the ability to taste PTC (\(T\)) is dominant over the allele for the inability to taste PTC (\(t\)). A homozygous recessive genotype (\(tt\)) means that there are no dominant alleles to express the tasting trait, so individuals with \(tt\) cannot taste PTC.
• Question 8: Punnett squares are graphical representations used in genetics to predict the genotypes and phenotypes of offspring based on the genotypes of the parents. Karyotypes are images of an individual's chromosomes, phenotypes are the observable traits of an organism, and alleles are alternative forms of a gene.
• Question 9: The frequency of a trait in a population is not determined by whether it is dominant or recessive. For example, in some human populations, the allele for Huntington's disease (a dominant - trait disorder) is much less common than the normal allele.

Answer:

1. \(tt\)
2. Punnett squares
3. False