Select all the correct answers.

what are two basic differences between dna and rna?

a) rna is usually single stranded, while dna is usually double stranded.

b) rna contains uracil, while dna contains thymine.

c) rna is usually double stranded, while dna is usually single stranded.

d) rna contains thymine, while dna contains uracil.

e) rna doesn’t contain cytosine, while dna doesn’t contain adenine.

Which best describes a gene? a. a sister chromatid b. a chromosome c. a tetrad d. a piece of a chromosome

1. in a certain species of plant, the color purple (p) is dominant to the color white (p). according the punnett square, what is the probability of and offspring being white? 50%25%0%100% 2. in a certain species of plant, the color purple (p) is dominant to the color white (p). according the punnett square, what is the probability of and offspring being white? 0%100%50%25%(picture 1 is for question 1, and picture 2 is for question 2)

The combining form leuk/o means red true or false