Question

15 multiple choice 2 points in pea plants, purple flower color is dominant to white flower color. what would be the probability of producing a plant with white flowers if we make the following cross: a plant that is heterozygous (pp) is crossed with a plant that produces white flowers (pp). complete a punnett square to determine the ratio. 25% 0% 100% 50% 16 multiple choice 2 points a farmer raises black and white chickens. to his surprise, when the first generation of eggs hatch all the chickens are black with white speckles throughout their feathers. what should the farmer expect when the eggs laid after interbreeding the speckled chickens hatch? 100% of the offspring will be black 50% of the offspring will be speckled, 25% will be black, and 25% will be white 100% of the offspring will be white 75% of the offspring will be black and 25% will be white 17 multiple answer 2 points which of the following would be an example of a genotype? (choose all that apply) aa brown eyes bb green eyes

Explanation:

Step1: Set up Punnett - square for question 15

The heterozygous plant (Pp) can produce two types of gametes: P and p. The white - flowered plant (pp) can only produce p gametes. The Punnett - square will have two rows and two columns. The gametes of the heterozygous plant are placed on top (P and p), and the gametes of the white - flowered plant are placed on the side (p and p).

Step2: Fill in Punnett - square for question 15

	P	p
p	Pp	pp

The genotypes of the offspring are Pp and pp in a 1:1 ratio. Since the white - flower color is recessive (pp), the probability of getting a white - flowered plant is 50%.

Step3: Analyze question 16

The speckled chickens are likely heterozygous for a trait showing incomplete dominance. Let's assume the black allele is B and the white allele is b. The speckled chickens have a genotype of Bb. When Bb x Bb is crossed, using a Punnett - square:

	B	b
b	Bb	bb

The genotypes and phenotypes are: 25% BB (black), 50% Bb (speckled), 25% bb (white).

Step4: Define genotype for question 17

A genotype is the genetic makeup of an organism. AA and Bb are examples of genotypes as they represent the alleles an organism has for a particular gene. Brown eyes and green eyes are phenotypes (observable traits).

Answer:

1. 50%
2. 50% of the offspring will be speckled, 25% will be black, and 25% will be white
3. A. AA, C. Bb