When we track alleles from lineages backwards in time, we see them ultimately fuse into one lineage. The result is a gene tree, which is produced by a process called ________

Fill in the blank(s) with correct word


coalescence

Biology & Microbiology

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____ are alternative forms of a gene that govern the same feature, such as eye color, and occupy corresponding

positions on homologous chromosomes. a. Alleles b. Loci c. Homozygotes d. Coupled traits e. Heterozygotes

Biology & Microbiology

A typical leaf is composed of multiple layers of specialized cells.  What is the correct order of layers starting on the upper surface of the leaf and progressing to the lower surface?

A. epidermis - cuticle - epidermis - palisade mesophyll - epidermis - spongy mesophyll B. cuticle - epidermis - palisade mesophyll - spongy mesophyll- epidermis - cuticle C. cuticle - epidermis - palisade mesophyll - epidermis - spongy mesophyll - cuticle D. palisade mesophyll - cuticle - epidermis - epidermis - spongy mesophyll - cuticle

Biology & Microbiology

What is the diagnostic structure produced by Paracoccidioides brasiliensis?

A) spiny spores visible by brightfield microscopy B) "steering wheel" or "captain's wheel" buds visible by brightfield microscopy C) spherules observed in tissue samples D) yeast buds that are not dissolved by KOH E) dimorphism when grown in the lab

Biology & Microbiology

The respiratory system is unlike the digestive system in that air flows into and out of the same opening.

Answer the following statement true (T) or false (F)

Biology & Microbiology