All life must maintain an internal balance, despite environmental changes. This is called

BRAINLIESTTT ASAP!! PLEASE HELP ME :)

dem82 [27]

The nucleus of an atom contain protons and neutrons, which make up most of the mass of an atom.

The answer would be 2 and 3 ( 2nd answer choice)

4 0

2 years ago

Read 2 more answers

Suppose two independently assorting genes are involved in the pathway that determines fruit color in squash. These genes interac

makvit [3.9K]

Answer:

100% yellow fruit color, Yyww.

Explanation:

Available data:

two independently assorting genes

the W allele codes for a dominant white phenotype

w allele codes for a colored squash

The allele Y codes for a dominant yellow phenotype

the allele y codes for a recessive green phenotype

The phenotypes from the first locus will always mask the phenotype produced by the second locus if the dominant allele (W) is present at the first locus. This masking pattern is known as dominant epistasis

Epistasis means "interruption" and refers to interactions between genes located in different loci in the same chromosome. An “epistatic gene” can alter, influence, or suppress the expression of a "hypostatic gene". When the epistatic gene is dominant, the interaction is known as "dominant epistasis".

W suppresses the expression of Y and y, this means that whenever W is present, the fruit is white. If W is not present, the fruit color can be expressed.

So, the proposed cross in the present problem occurs between a green fruited individual and yellow fruited individual, which suggests that W is absent.

Genotype for Green fruit: yyww

Genotype for purebred Yellow fruit: YYww

Cross:

Parental) YYww x yyww

Gametes) Yw Yw Yw Yw yw yw yw yw

Punnet square) Yw Yw Yw Yw

yw Yyww Yyww Yyww Yyww

F1) 100% Yellow fruited plants, Yyww

As these two genes assort independently, we can also represent the cross for each gene by separate, like this:

For w gene:

Parental) ww x ww

Gametes) w w w w

Punnet square) w w

w ww ww

F1) 4/4 or 100% colored-fruits

For Y gene:

Parental) YY x yy

Gametes) Y Y y y

Punnet square) Y Y

y Yy Yy

F1) 4/4 or 100% yellow fruits, Yy.

3 0

3 years ago

How does lactulose help with hepatic encephalopathy?

galben [10]

Hepatic encephalopathy is a condition seen patients with liver dysfunction and this condition describe a spectrum of reversible neuropsychiatric abnormalities which implies that altered brain function which is due to metabolic abnormalities. However, the administration of lactulose causes reduction in the urea production rate which is consistent with the reduced entry of ammonia into portal blood.

5 0

3 years ago

Which of the following is an example of catabolism? A. The synthesis of the cell membrane from precursor molecules B. The oxidat

Shtirlitz [24]

Answer:

The correct answer is option B. the oxidation of glucose in the cytoplasm and mitochondria.

Explanation:

The catabolism is the reaction or process that involves breakdown of the larger molecules into smaller molecules. This is the one of the metabolic reaction. Such reactions releases energy.

Oxidation of glucose is a catabolic reaction that involves spliting of glucose into water and oxygen in the respiration.

Thus, the correct answer is option B. the oxidation of glucose in the cytoplasm and mitochondria.

8 0

2 years ago

Why is barrow alaska one of the most important places to go to study the effects of climate change?

finlep [7]

because “Barrow is ground zero for climate-change science, and because we worry that climate change is shrinking the sea ice and we don’t know how that will affect the animals that depend on it. But at this time there is no effective plan if a catastrophe such as a ship collision or oil spill occurs. The Coast Guard hasn’t decided what its presence will be in the Arctic. Someone needs to monitor whats going on there.

4 0

3 years ago