What is a tetrad ?
a. another term for a sperm cell
b. a chromatid before meiosis
c. two sets of sister chromatids
d. a haploid cell produced by meiosis
c two sets of sister chromatids

In pea plants, the allele for inflated pod seed, i, is dominant over the allele for constricted pod seed, i. the punnett square shows a cross for this trait. which offspring will be homozygous dominant

Give three examples of plant activities that are affected by circadian rhythms and natural fluctuations in the length of daylight?

What advantages does a pedigree have over a written passage?