Which is an example of a deletion mutation that results in a new protein?
a)cat - cga - tcc mutates to cac - tcg - atc - c
b)aat - cgg - cca mutates to aac - cgg - cca
c)aat - cgg - cca mutates to aat - cgg - aat - cca
d)cat - cga - tcc mutates to cat - tcc

The correct answer is-

D) CAT - CGA - TCC mutates to CAT - TCC.

Mutation can be described as permanent change in the genetic material ( DNA) of living organism. Deletion is a type of mutation, which results due to the loss of part of chromosome or loss of DNA sequence during the process of replication of DNA. Due to this, a new or truncated protein is produced when DNA undergoes transcription ( formation of mRNA from DNA) and translation ( formation of protein from mRNA).

In the given options of this question, option D) is an example of deletion mutation as the strand CAT - CGA - TCC shows the deletion of CGA and forms CAT - TCC, which will form new protein.

"menstrual cycle is a complex cycle that consists of several processes. order of occurrence of steps in menstrual cycle are as follows:

1. high progesterone levels maintain the endometrium lining of the uterus.

2. endometrium lining breaks down and low levels of estrogen stimulate the pituitary to release fsh and lh.

3. fsh and lh stimulates the follicles to develop and the oocyte to produce estrogen.

4. rising estrogen levels suppress fsh production and development of other follicles.

5. a spike in lh causes follicle to rupture.

6. a breakdown of corpus luteum causes progesterone level to drop."