Consider the genes for pea color (the "y" gene) and pea height (the "t" gene). for the "y" gene, the y allele = yellow peas and the y allele = green peas; for the "t" gene, the t allele = tall peas and the t allele = short peas. draw and fill in a punnett square for a dihybrid cross of two pea plants that both have the genotype yy tt. what is the expected phenotype frequency of yellow and tall offspring?

9/16= tall and yellow offspring

Explanation:

Two dihybrid pea plants for color and height are crossed to obtain the progeny. The genotype of both the parents is "TtYy".

Each of the dihybrid parent will form four types of gametes in 1:1:1:1 ratio= TY, Ty, tY and ty. A random fusion of gametes from both the parents would give a progeny in following phenotype ratio=

9 tall and yellow: 3 tall and green: 3 dwarf and yellow: 1 dwarf and green

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.

1. efficient use of space

2. elimination of groundwater contamination

3. energy generation

4. lower carbon footprint