Blog

In this image identify the muscle that arrow A is pointing to [arrowA] In this image identify the muscle that arrow B is pointing to [arrowB]  

Name the bone in the image below: [bone] What is the name of the marking indicated by the red pointer? [mark]

In this image identify the structure arrow A is pointing to [arrowA] In this image identify the structure arrow B is pointing to [arrowB]

In this image identify this structure that arrow A is pointing to [arrowA] (brown structure) In this image identify the structure that arrow B is pointing to [arrowB] 

What is the probability that both individuals IV-1 and IV-2 will be unaffected?

In this image identify this structure that arrow A is pointing to [arrowA] In this image identify this division of the brain that arrow B is pointing to [arrowB]

The trait depicted in the pedigree is

___________ occurs when a chromosome segment is detached, flipped 180o, and reinserted into the same location in the chromosome.

A scientist studying Drosophila received three different mutants from collaborators that all had tiny wings. When the scientist crossed flies with the r1 mutation with flies with r2, she saw the offspring all had tiny wings. When she crossed r2 with r3 mutants, she saw the offspring flies had wild-type normal wing size. What wing size would you expect if the scientist crossed r1 with r3 mutants, and why?

A mouse geneticist considers five homozygous recessive mutant strains of mice (1, 2, 3, 4 and 5). All show the same phenotype: pink eyes. Crosses were made using all possible pairs of the five mutants. The offspring phenotypes are shown below. ‘WT’ indicates wild type normal eye color and ‘M’ indicates mutant pink eyes. Based on these results, how many different genes were mutated in making these five lines?       Mouse 1 Mouse 2 Mouse 3 Mouse 4 Mouse 5 Mouse 1 M WT M M WT Mouse 2   M WT WT M Mouse 3     M M WT Mouse 4       M WT Mouse 5         M