In tomato plants, the germ cells are in the flowers. the yellow (y) gene controls flower color, such that y_ plants have yellow flowers and yy plants have white flowers. the red (r) gene controls fruit color, such that r_ have red tomatoes and rr plants have yellow tomatoes. the r and y genes are 15 maps unit from each other on chromosome 2. a botanist sets up a parental cross between a true breeding yellow flowered plant with red tomatoes and a plant that is true breeding, double-recessive for the y and r genes. the gametes produced by the true-breeding plant with the dominant phenotypes is/are while the gametes produced by the true-breeding plant with the recessive phenotypes is/are choose one answer. 1) yr and 2) yr 1) yr/yr and 2) yr/yr 1) yr and 2) rr 1)yr and 2) yyrr

***see attached pic***

You're given the phenotypes of the parents, with descriptions about their genotypes ("true breeding" = "homozygous" or "same alleles"), so it's helpful to start by writing out the genotypes of the parents.  Remember, there are two alleles for any given gene (you get one allele from each parent) and this problem is talking about 2 separate genes, so therefore our genotypes will have 2 genes x 2 alleles per gene = 4 alleles.

Once you've written the genotype, "FOIL" (first, outer, inner, last) the genotype to give you all the possible allele combinations that could be paired in that parent's gametes.

*These combinations^ will have one allele for each gene (example: YR) because the the offspring will inherit one allele for each gene from both parents when the parents' gametes come together (fertilization) for a total of two alleles for each gene.*

Your answer should be A.

true is the final answer!

answer: ice crystals in air

the water from the water body or another source of water gets evaporated as water vapor as an effect of heat on water. these water vapor rises in the upper layers of the earth atmosphere under high atmospheric pressure. the atmospheric pressure of these water molecules starts to decrease due to the effect of cold air. the invisible water vapor condenses into visible water droplets and ice crystals.these ice crystals and water droplets being less denser than the surrounding air floats on air as clouds.