4.04 genetics lab question 6 color blindness is an example of which of the following?

question 6 options:

codominance

multiple alleles

sex-linked traits

autosomal disorders

The correct option is C. Color blindness is an example of sex-linked traits.

Explanation:

Sex-linked traits can be described as those traits for which genes are present on the sex chromosomes. In humans, as X chromosome is a lot bigger than the Y chromosome, hence majority of the sex-linked traits are present on the X chromosome.

Colour blindness is an X linked trait and is more common to men than to women. This is because the gene for colour blindness is present on the X chromosome. As men have only one X chromosome so they have more chances of this disease.

i think it would be b. tissue because an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.

step 1: initiation

initiation is the beginning of transcription. it occurs when the enzyme rna polymerase binds to a region of a gene called the promoter. this signals the dna to unwind so the enzyme can ‘‘read’’ the bases in one of the dna strands. the enzyme is now ready to make a strand of mrna with a complementary sequence of bases.

step 2: elongation

elongation is the addition of nucleotides to the mrna strand. rna polymerase reads the unwound dna strand and builds the mrna molecule, using complementary base pairs. there is a brief time during this process when the newly formed rna is bound to the unwound dna. during this process, an adenine (a) in the dna binds to an uracil (u) in the rna.

step 3: termination

termination is the ending of transcription, and occurs when rna polymerase crosses a stop (termination) sequence in the gene. the mrna strand is complete, and it detaches from dna.