1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
lakkis [162]
3 years ago
6

Human hair color is a classic, if oversimplified, example of recessive epistasis. Red hair is caused by a recessive allele r. Ho

wever, if an individual has a dominant R allele, they may have either brown or blonde hair depending on whether they have a dominant B allele (which causes brown hair), or are homozygous for a recessive b allele (which causes blonde hair). The B and R loci are on located on different chromosomes. If a couple with genotypes Bb; Rr and bb; rr have children, what hair colors and in what proportions are expected among their children?

Biology
1 answer:
Vanyuwa [196]3 years ago
5 0

Answer:

1 Brown: 1 Blonde: 2 Red

Explanation:

According to the given information, the recessive allele "r" gives red color to hair but is epistatic to alleles B and b. Therefore, the genotype with two copies of the "r" allele would have red-colored hair. The genotypes with at least one copy of "B" and “R" alleles each would have brown hair while the "R" allele would give blond hair in presence of allele "b".

Therefore, a cross between BbRr and bbrr would produce progeny in following phenotype ratio= 1 Brown: 1 Blonde: 2 Red

You might be interested in
Can someone help MMEE!
9966 [12]

Answer:

D

Explanation:

This may seem difficult to answer at first, cuz A and even B sounds plausible, but the relative direction of where she's drawing the picture is not known. And we know that the sun does not rise and set in the same place everyday. So the best answer would be D

6 0
3 years ago
A species of rabbit is preyed upon by foxes, which are preyed upon by wolves. Humans decide to open a hunting season on the wolf
Zigmanuir [339]

Answer:

The rabbit population will decrease, due to the increased fox population.

Explanation:

Predator-Prey system usually experience changes that are cyclic. This occurs because the availability of the foods influences the population size. So, if there is not enough food for the predator (prey), their population will decrease in size. On the other hand, population of predator also has influence on the pray: population of prey will grow if there is decrease in population of predators.

8 0
3 years ago
Given the fact that food manufacturers have to abide by food safety guidelines, do you think our taste buds are obsolete?
steposvetlana [31]
The answer is false. It is because the way the food manufacturers abide food safety guidelines or how they manufacture food will affect a person's taste buds. Obsolete means out of date-- which, will not happen to our taste buds as it does not involve in how the manufacturers dealt with the food and makes our taste buds turn to out of date or have it less developed.
7 0
3 years ago
Read 2 more answers
How are traits
Ilya [14]

A. Organisms with less desirable traits do not reproduce
is the answer
5 0
3 years ago
All organisms interact with their environment. choose one of the biogeochemical cycles and explain how various types of organism
Alla [95]

All organisms interact with their environment. choose one of the biogeochemical cycles and explain how various types of organisms are part of that cycle and help recycle the substance in an ecosystem. One example of how human activity has impacted the cycle is that humans have polluted the water making it unsafe and in some cases not suitable to support life.

5 0
2 years ago
Read 2 more answers
Other questions:
  • During glycolysis, a molecule of glucose is partially oxidized. what is the net gain of atp and nadh for each glucose molecule d
    5·1 answer
  • Single celled microorganisms are sometimes called simple organisms why is this inaccurate
    12·2 answers
  • Describe the physical features and gene contents of mitochondrial and chloroplast genomes and discuss the current hypothesis con
    13·1 answer
  • Monadelphous define​
    8·1 answer
  • Benefits of Microscopes
    10·1 answer
  • What is the difference between extrinsic and intrinsic clotting?
    10·1 answer
  • Eukaryotic cells require a careful, step-by-step process to make sure chromosomes are properly delivered ..... true or false
    14·1 answer
  • What is the control for “which bait works best for a homemade fly trap?”
    7·1 answer
  • Plants are autotrophs, which means they create their own food. What organelle carries out the process of photsynthesis that make
    9·1 answer
  • A student is building a model of a parallel circuit consisting of a battery, a switch, live light bulbs
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!