1. A scientist has a pea plant that produces yellow-seeds. Since yellow is domin
ID: 62332 • Letter: 1
Question
1.
A scientist has a pea plant that produces yellow-seeds. Since yellow is dominant to green, she wants to determine if the plant is homozygous or heterozygous. In order to be certain that she will get conclusive results from a single cross, she could cross it with: List the letters of all that apply.
a. a green-seeded pea plant
b. a yellow-seeded pea plant
c. a pea plant that produces both yellow and green seeds
d. itself
2.
A woman with blood type O has a child with blood type O. She claims that a man named Ralph is the child's father. Her claim would be proven false if Ralph has blood type: Check all the letters that apply.
a. O
b. A
c. B
d. AB
3.
Based on his monohybrid crosses, Mendel's proposed which of the following? List all letters that apply.
a. Alternative forms of a trait are encoded by alternative alleles.
b. The 2 alleles for a given trait separate when gametes form.
c. Each allele has an equal probability of being passed on to the gametes.
d. Allele pairs segregate independently of each other.
e. Diploid individuals have 2 alleles for each trait.
4.
Knight followed up on attempts of English farmers to improve varieties of agriculture with his studies on garden peas. When he crossed two true-breeding varieties, he found all of the following: List the letters of all that apply.
a. All the F1 offspring had the dominant trait.
b. If both parents have the same trait, then all of their offspring will also have that trait.
c. Some F2 offspring had the dominant trait and some had the recessive trait.
d. Among the F2 offspring, more had the dominant trait and fewer had the recessive trait.
5.
Mendel chose the garden pea for his work on inheritance for which of the following reasons? List all the letters that apply.
a. Some traits in pea plants are controlled by one dominant allele and one recessive allele.
b. Earlier investigators had shown segregation among the offspring.
c. A large number of true breeding varieties were available.
d. The generation time was short; many offspring can be grown easily.
e. He could choose to self- or cross-pollinate.
Explanation / Answer
1. a, d.
2. d.
3. b,c,d,e.
4. a, c,d.
5. b,c,d,e.
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