Part 4 - Natural Selection and Adaptations

Biology

1 answer:

levacccp [35]2 years ago

4 0

Answer:

ejfjfisioakendififidishwhej

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Jason and Lyric both are trying to enter Harmony House. Jason pushes on the door with a force of 5N right and Lyric pushes on th

goblinko [34]

the total number of pushes all together will be 8N

4 0

3 years ago

A tertiary consumer, such as a red-tailed hawk, receives what percent of the energy fixed by primary producers in a typical fiel

myrzilka [38]

Assuming a 10% trophic efficiency, the herbivore (primary consumer) will get 10% of the producer energy. Then, the second consumer that eat the herbivore will get 10% of the primary consumer energy, so it is 10%*10%= 1% of the primary producers.
Then, the tertiary consumer should get 0.1% of the primary producers' energy.

8 0

3 years ago

Read 2 more answers

In ducks, the trait for normal feathers is dominant to the trait for silky feathers. If

vesna_86 [32]

Answer: The genotype ratio is 2Ff : 2ff

The phenotype ratio is two normal feathered birds to two silky feathered birds.

Explanation: Let F represent the gene for normal feather and f represent the gene for silky feather. F is dominant while f is recessive, therefore a male that is hybrid for trait of normal feather is heterozygous and will have a genotype of Ff, a female that is homozygous for silky feather will have a genotype of ff.

A cross between Ff and ff will yield 2Ff birds and 2ff birds. Since F is dominant, a bird having genotype of Ff will manifest outwardly as blue feathered birds while ff will manifest outwardly as silky feathered birds because f is recessive and must occur in a homozygous condition in order to manifest phenotypically. Therefore, the genotype ratio is 2Ff: 2ff.

See the punnett square attached for more information