Question

9 multiple choice 2 points which is one of the seven characteristics that mendel observed in pea plants? flower size stem color leaf shape seed texture 10 multiple choice 2 points traits that are inherited unchanged in a hybridization and which mask recessive traits are ______ traits. dominant codominant recessive incompletely recessive 11 multiple choice 2 points use a punnett square to do the following cross and determine the predicted phenotypic ratio of the offspring. imagine that a couple is planning to have children. the male is heterozygous for tongue rolling and homozygous dominant for unattached earlobes. the female is homozygous recessive for tongue rolling and heterozygous for unattached earlobes. the couple is curious about the possibility and probability of their offspring inheriting these traits. the ability to roll ones tongue is dominant (r) over the
on - rolling\ condition (r.) unattached earlobes (u) are dominant over attached earlobes (u) what is the probability that their offspring will have attached earlobes and can roll their tongue. 50% 3.5% 25%

Explanation:

• For question 9, Mendel observed seven characteristics in pea - plants including seed texture (smooth or wrinkled), flower color, flower position, pod shape, pod color, stem length, and seed color.
• For question 10, dominant traits are those that are inherited unchanged in a hybridization and mask recessive traits.
• For question 11, First, analyze the genotypes of the parents for each trait separately. For tongue - rolling, the male is Rr and the female is rr. The possible genotypes of offspring for tongue - rolling are Rr and rr in a 1:1 ratio. For earlobes, the male is UU and the female is Uu. All offspring will have the genotype UU or Uu (unattached earlobes). To have attached earlobes and be able to roll the tongue, we need a combination of the right genotypes from both traits. The probability of having attached earlobes (uu) is 0 (since one parent is UU), and the probability of being able to roll the tongue (Rr) from the tongue - rolling cross is 50%. Since having attached earlobes is impossible in this cross, the overall probability of having attached earlobes and being able to roll the tongue is 0. But if we assume there was a mis - typing and we just consider the tongue - rolling part for the given options, from the Rr x rr cross, the probability of having the dominant tongue - rolling trait (Rr) is 50%.

Answer:

1. seed texture
2. dominant
3. 50%