Question

biology exam

1. which of the following methods of reproduction only requires one parent?

a. fragmentation
b. sexual reproduction
c. budding
d. a & c are correct
e. a & b are correct

1. mendels law of segregation states that organisms inherit two copies of each gene and that...

a. organisms donate copies to offspring in unpredictable ratios.
b. organisms donate copies to offspring in predictable ratios.
c. organisms donate only dominant alleles to offspring.
d. organisms donate recessive alleles as discrete units.

1. which observation of dihybrid crosses led to mendels law of independent assortment?

a. particular individual traits persisted for many generations.
b. many combinations of traits were always inherited together.
c. some combinations of traits were not passed to offspring.
d. the presence of one trait did not affect the presence of another.
b.h.3: genetic mechanisms and inheritance

Explanation:

• Question 18: Fragmentation and budding are asexual reproduction methods that only require one parent. Sexual reproduction requires two parents.
• Question 19: Mendel's law of segregation states that organisms donate copies (alleles) to offspring in predictable ratios (50 - 50 for each allele from a heterozygous parent).
• Question 20: Mendel's law of independent assortment was based on the observation that the presence of one trait did not affect the presence of another in dihybrid crosses.

Answer:

1. d. A & C are correct
2. b. Organisms donate copies to offspring in predictable ratios.
3. d. The presence of one trait did not affect the presence of another.