The trait for 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'. The trait for red flowers is controlled by the genes RR, pink by RR', and white by R'R'
A cross is made between two plants each with medium-sized leaves and pink flowers. If they produce 320 seedlings, what would be the expected phenotypes, and in what numbers would they be expected? Assume no linkage.
20 large, red
40 medium, red
20 small, red
40 large, pink
80 medium, pink
40 small, pink
20 large, white
40 medium, white
20 small, white
You might also like to view...
Answer the following statements true (T) or false (F)
1. One way that archaeans differ from bacteria is that archaeans possess more peptidoglycan in their cell walls. 2. Chitin is found in the cell walls of algae, but is not found in the cell walls of any other types of microorganisms. 3. Tyndallization is a process that kills spores as well as vegetative cells. 4. Procaryotic cells do not contain endoplasmic reticulum, Golgi bodies, mitochondria, plastids, or membrane-bound vesicles. 5. In eucaryotic cells, ribosomal RNA (rRNA) molecules are manufactured in the nucleolus.
The pattern of gene transfer from Hfr to F- cells ____
a. occurs with genes furthest from the F factor being transferred first
b. can be used to map chromosomal genes in the F- cell c. was used to map the E. coli chromosome d. cannot be used to indicate the relative positions of genes within the Hfr cell e. is random because the F factor moves between different positions in the chromosome
Woolly mammoths were determined to be more closely related to Asian elephants than to African
elephants on the basis of
a. DNA sequencing of nuclear genes b. anatomical evidence c. embryological evidence d. mitochondrial DNA sequences e. cytochrome c amino acid sequences
Discuss one of the pros and cons regarding the application of recombinant DNA technology
What will be an ideal response?