Two true breeding snapdragons were crossed: Parents = Red x White F1 phenotype = 100% Red flowers Based on the above, what percentage of red flowers are expected from the cross: Parents = White x  White?

The physical expression of an organism’s genes is its:

An organism’s phenotype is determined by the specific combination of inherited __________.

In fruit flies, dominant gene “R” produces red eyes and recessive gene “r” produces white eyes.   Also, the R and r alleles are sex-linked (they are part of the X chromosome but not the Y chromosome or the autosomes).   Which mating below gives offspring that all have red eyes and all females are carriers of the white eyes gene?

In a duplicated eukaryotic chromosome, sister chromatids are joined at a region called the:

In plant cells, cytokinesis includes:

Which is a phenotype?

Consider these events in mitotic cell division: Cleavage furrow forms. Nuclear envelope (membrane) breaks down. Sister chromatids separate. Chromatin condenses into chromosomes. Chromosomes align at the equator. Nuclear envelope (membrane) forms. Which event occurs the earliest?

The following genes in Ogres have been described and analyzed: T= allele for two-headedness (dominant) t= allele for one head (recessive) H= allele for hairy body (dominant) h= allele for non-hairy body (recessive) B= allele for brown eye color (dominant) b= allele for red eye color (recessive) A two-headed (homozygous), red–eyed ogre male marries a one-headed, brown-eyed (heterozygous) wife.  What is the expected phenotypic ratio of their offspring?

Which about pluripotent stem cells is true?