You are studying a variety of pea plant that has either red flowers or white flowers. When you cross true-breeding red-flowering plants with true-breeding white-flowering plants, you get all red-flowering plants in the F1 generation. If you then allow the F1 plants to self-ferilize, you observe that 75% of the F2 plants are red-flowering plants, while 25% of the F2 plants are white-flowering plants. Next you make 640 different monohybrid crosses and decide to analyze only the first 8 plants produced from each of these crosses (i. e. a total of 5120 progeny plants total). How many of these crosses would be expected to produce 6 red plants and 2 white plants?

199 or 200

Explanation:

The computation of the number of these crosses is shown below:

P (red) = 75% = a

P (white) = 25% = b

Now determine the probability of 6 red + 2 white and then multiplied it by 640

Now use the binomial theorem

now the required probability is

= 28 × (0.75)^6 × (0.25)^2 × 640

= 199.25

= 199 or 200

hence, the number of corsses is 200

water is a polar molecule. a chemical bond is a force of attraction between atoms or ions. bonds form when atoms share or transfer valence electrons. atoms form chemical bonds to achieve a full outer energy level, which is the most stable arrangement of electrons. so, false

explanation:

in h2o molecule, two water molecules are bonded by a hydrogen bond but the bond between two h - o bonds within a water molecule are covalent. the greater the electronegativity difference, the more ionic the bond is. bonds that are partly ionic are called polar covalent bonds. nonpolar covalent bonds, with equal sharing of the bond electrons, arise when the electronegativities of the two atoms are equal.