Biology Answers

I was making a video about poultry farming and selective breeding and nowhere on the internet or in research centres I got the answer for 'How many fertilized eggs do Hens lay in a year naturally?' or 'How many eggs Hen can lay in a year which will have chicks in it?'

I am aware that the answer varies breed to breed but can there be some approx number for the majority of Hens breeding used to produce eggs?

Like I read somewhere that Hens used in poultry farms in the UK lay around 300 eggs a year whereas without human interference the number is around 10-12.

observe the following offspring proportions: 

tall/inflated: tall/constricted: dwarf/inflated: dwarf/constricted in a 9:3:3:1 ratio. 

Notice from the grid that when considering the tall/dwarf and inflated/constricted trait pairs in isolation, they each inherited in 3:1 ratios as expected with a monohybrid cross. 

Use headers to label each part of your experiment.

Test the hypothesis: cross the dwarf and tall plants and then self-cross the offspring. What precautions in the crosses and in growing the plants? 

Analyze data: You observe the following plant phenotypes in the F2 generation: 2706 tall/inflated, 930 tall/constricted, 888 dwarf/inflated, and 300 dwarf/constricted. Reduce to a ratio and determine if they are consistent with Mendelian laws. Were the results close to expected 9:3:3:1 phenotypic ratio? the results support the prediction? What is observed if far fewer plants were used, given that alleles segregate into gametes? what if windy? 

Environmentalists are monitoring an area of tropical forest that is being deforested because of human activities. The graph here shows the scientists predictions based on the data they have collected .How is the ecosystem likely to change as a result? Select the two correct answers. A Soil enrichment B. An increase in oxygen Loss of habitat of species

. It is important to maintain ___________ levels within a normal range for bone repair and maintenance, blood clotting, and electrical conduction along nerves.

Asses the possibility of errors occurring during the stages of protein synthesis, particularly during transcription and translation .analyse the cause and effect of genetic mutation in DNA including Missense,Nonsense,Silent,insertion,deletion,duplication,frameshift