Select which example are induced mutations.
a. nitrous acid causes the deamination of adenine to hypoxanthine.
b. transposition causes the formation of deletions.
c. errors in dna replication cause the formation of point mutations.
d. ionizing radiation causes chromosomal fragmentation

The examples of induced mutations are:

a. Nitrous acid causes the deamination of adenine to hypoxanthine

d. Ionizing radiation causes chromosomal fragmentation

Explanation:

Induced mutations are done by breeders to produce crops with required or desirable traits.

Induced mutation through chemical means can be done by introducing chemical mutagens like nitrous acid. Generally, nitrous acid has the capability to deaminate the nitrogenous bases and also to replace its amino group by a keto group.

So when nitrous acid is added to:

Ionizing radiations using gamma radiations is a type of spontaneous induced mutation which induces genetic variability by causing chromosomal fragmentation and instability.

i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.

the answer is:

carbon dioxide