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Nikitich [7]
3 years ago
6

Black hair is dominant to red hair two black cocker spaniels have 12 puppies 9 black and 3 red what is the genotype of each pare

nt
Biology
2 answers:
Rus_ich [418]3 years ago
6 0
Bb,Bb because the two parents exhibit 75%  dominance 25% recessive in their offspring try drawing a box withe four squares one parent on top the other on the left side copy the traits into to box    
Alexus [3.1K]3 years ago
5 0
The genotype for both parents is Br. if using B= black and r = red
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In a separate study, 68 rock pocket mice were collected from four different, widely separated areas of dark lava rock. One colle
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Complete question:

In a separate study, 68 rock pocket mice were collected from four different, widely separated areas of dark lava rock. One collecting site was in Sonora, Mexico. The other three were in Chihuahua, Mexico. Dr. Nachman and colleagues observed no significant differences in the color of the rocks in the four locations sampled. However, the dark-colored mice from the three Chihuahua locations were slightly darker than the dark-colored mice from the Sonora population. The entire Mc1r gene was sequenced in all 68 of the mice collected. The mutations responsible for the dark fur color in the Sonora mice were absent from the three different populations of Chihuahua mice. No Mc1r mutations were associated with dark fur color in the Chihuahua populations. These findings suggest that adaptive dark coloration has occurred at least twice in the rock pocket mouse and that these similar phenotypic changes have different genetic bases.

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Answer:

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Explanation:

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