The trait of medium-sized leaves in iris is determined by the genetic condition PP?. Plants with large leaves are PP, whereas plants with small leaves are P?P?. A cross is made between two plants each with medium-sized leaves. If they produce 80
seedlings, what would be the expected phenotypes, and in what numbers would they be expected?
A) 20 (large leaves), 20 (medium leaves), 40 (small leaves)
B) 40 (large leaves), 40 (medium leaves), 0 (small leaves)
C) 40 (large leaves), 0 (medium leaves), 40 (small leaves)
D) 10 (large leaves), 60 (medium leaves), 10 (small leaves)
E) 20 (large leaves), 40 (medium leaves), 20 (small leaves)
Answer: E
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Plants, animals, and fungi are complex multicellular organisms we encounter all the time. In which order did these groups of organisms likely appear on the planet?
A. animals, then land plants, then fungi B. fungi, then land plants, then animals C. fungi, then animals, then land plants D. land plants, then animals, then fungi E. land plants, then fungi, then animals
Pcr
1.is a way of replicating DNA without using a cell. 2.uses two primers. 3.can produce large amounts of DNA very quickly. 4.avoids the use of vectors. 5.All of the options are correct.
What is the name of the chromosomal region, located on region 21q22.2, that was identified by studying individuals with partial trisomy of chromosome 21?
What will be an ideal response?
What do scientists believe was the original genetic material able to copy itself without assistance?
A) DNA B) RNA C) Proteins D) Enzymes