HELP! Fred and Charlotte are expecting a child. Fred is homozygous for blue eyes, and is heterozygous for
tongue rolling. Charlotte is heterozygous for brown eyes and cannot roll her tongue (homozygous
for non-rolling). Create 2 Punnett squares to see what the chances their child will have. Use the
letter ‘b’ for eye trait and ‘r’ for tongue trait.

c) 50% there are four chromosomes. after crossing over, 2 of the four have been changed. that means any gamete has a 2 in 4 chance or 50% chance of receiving the mutated chromosome.

ans.

dna fingerprinting is defined as a process that determines the dna characteristics of an individual. these dna characteristics are unique among individuals as their fingerprints, so it is known as dna fingerprinting.

steps of dna fingerprinting includes extraction of dna from sample, amplification of dna, restriction digestion of amplified dna, and then analysis of dna by gel electrophoresis, respectively.

thus, the next step performed by the scientist is 'to cut the amplified dna (obtained by polymerase chain reaction) by restriction enzymes that cleave the dna into fragments and their analysis.'

i think the answer is a.keratin is the pigment responsible for skin color.