You are examining offspring (zygotes) of females that may have one or more copies of a recessive mutation in a maternally active
segmentation gene. Which of the following zygotes will have a mutant phenotype: (1) A homozygous zygote that came from a heterozygous mother. (2) A heterozygous zygote that came from a heterozygous mother. (3) A heterozygous zygote that came from a homozygous mother. A. Choices 1 and 2. B.. Choices 2 and 3. C. All of these choices. D. Only choice 3.
Your bones and muscles work together to support and move your body. Your respiratory system takes in oxygen from the air and gets rid of carbon dioxide.
Homologous structures are anatomical features in an organism that are structurally and functionally diverse but they originate from a single common ancestor.
Homologous structures possess a similar basic internal structure but can have entirely different morphology and function.
For example, the wings of a bat and a human's arm have the same internal structure but they have different functions.
Vestigial structures are evolutionary remnants that no longer serve a purpose in modern forms or descendants of the original organism.
Inherited and developmental are out of context in terms of evolutionary relationships.
