Answer:
Man's genotype: XᴮY
Woman's genotype: XᴮXᵇ
Daughter's genotype: XᵇXᵇ
The daughter is not the man's child.
Explanation:
Color blindness is a sex-linked trait caused by a recessive allele located in the X chromosome (Xᴮ=normal vision; Xᵇ-color blind).
Women have two X chromosomes, while men have an X and a Y chromosomes. For that reason, women need to have two recessive alleles to be color blind, while men only need one Xᵇ to be colorblind.
Since the man has normal color vision, his genotype would be XᴮY.
If the daughter is her father's, she would have inherited his dominant Xᴮ allele, so she would have normal vision. However, she is colorblind, so her genotype is XᵇXᵇ. She is not the man's daughter.
The mother also has normal color vision, but her daughter inherited a recessive allele from her, so her genotype is heterozygous XᴮXᵇ.
Answer:
All options seem to be feasible here, a) Currently, blood tests are done at birth to screen for phenylketonuria (PKU). Option b) For a person with PKU, fruits, vegetables, grains, and special prescription formulas should compose the bulk of the diet. c) Individuals with PKU cannot metabolize phenylalanine
Explanation:
Blood tests have been part of the Newborn screening program for many diseases, including PKU (option a)
Special diets programs including low ingesta of the amino acid Phenylalanine, have been used to control the disorder (option b)
The impossibilty to metabolize phenylalanine is the main feature of this genetic disorder (option c)
Answer:
Punnett Squares are unable to predict the offspring of an asexual organism because there is only one parent from which the offspring can receive genes from. The whole point of a Punnett Square is the fact that it covers all possible offspring outcomes besides mutations from the usual two parents.
Answer:
Some kind of neuron
Explanation:
I'm sorry I'm not too sure- it's some kind of neuron. It may be a motor Neuron? Try looking it up.
