Question

true/false – indicate if each statement is true (t) or false (f). if the answer is false, correct the word(s) in red to make it true.

1. ____ for each trait, each parent provides three gene variants to the offspring.
2. ____ each person has different traits and chromosomes.
3. ____ humans have 42 (21 pairs) of chromosomes.
4. ____ all mutations are bad.

short answer – answer each question in complete sentences.

1. explain why siblings from the same parents have different traits.
2. explain the 3 ways dna can be altered to cause a mutation.

Explanation:

Question 15

In genetics, for each trait, each parent typically provides one gene variant (allele) to the offspring, not three. So the statement is false. To correct it, change "three" to "one".

While people have different traits, all humans have 23 pairs of chromosomes (46 total), not different chromosomes in terms of the set (the types of chromosomes are the same across humans, though the alleles on them vary). So the statement is false. To correct it, change "different chromosomes" to "different combinations of alleles on chromosomes" (or more simply, note that the chromosome number and type set is the same, but traits differ due to allele differences).

Humans have 23 pairs (46 total) of chromosomes, not 21 pairs (42 total). So the statement is false. To correct it, change "42 (21 pairs)" to "46 (23 pairs)".

Answer:

False. Correct: For each trait, each parent provides one gene variant to the offspring.

Question 16