In sexual reproduction in eukaryotes, each parent contributes one set of chromosomes to the offspring.
a. true
b. false
a. true
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The B-I mutation in anthocyanin (red pigments) produces pigmented corn plants, whereas the B? mutation in the same gene usually produces nearly unpigmented corn plants when homozygous (B ´/B ´). When homozygous B-I and B? plants are intercrossed
, the F1 plants are essentially unpigmented, like the B? homozygotes. If this outcome were due simply to the dominance of B? to B-I, then a self-cross of the F1 plants (B ´/B-I) should generate B-Iâ€"colored homozygotes as approximately 1/4 (B-I/B-I) of the F2 progeny. Instead, no F2 are pigmented. Intercrosses of the F2 and of further generations do not restore the pigmented phenotype. What is the term for this type of inheritance? A) Mendelian inheritance B) organelle genome inheritance C) allelic inheritance D) epigenetic inheritance
The mechanisms that control the number of crossover events in a cell have been well characterized
Indicate whether the statement is true or false.
Which of the following is not an event of phagocytosis?
A. Destruction B. Diapedesis C. Ingestion D. Phagolysosome formation E. Chemotaxis
What phase does it occur when each pole of the cell now has one new daughter nucleus, each with a haploid number of chromosomes
What will be an ideal response?