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MrRissso [65]
3 years ago
6

Is the Cell wall an Animal Cell or Plant Cell? please answer i will give brainliest

Biology
1 answer:
otez555 [7]3 years ago
5 0

The cell wall is only in the plant cell to provide it a ridged structure.

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Interbreeding two different species of lovebirds produces offspring that are unable to build a nest after they mature because th
Ad libitum [116K]

The question is incomplete and the whole question is-

Interbreeding two different species of lovebirds produces offspring unable to build a nest after  they mature because they lack the innate knowledge needed to carry the nesting materials. The hybrid offspring do not reproduce, and this limits genetic mixing of the two species. This is an example of:

Answer:

The correct answer is- Hybrid infertility

Explanation:

When members of two different species reproduce and produce offspring, then these offsprings are called hybrid. If the hybrid offsprings are not able to produce viable gamete and do not able to reproduce then this is called hybrid infertility. One of the famous examples is mule produce by breeding between donkey and horse.

So here interbreeding of two species of lovebirds produces offspring that do not reproduce and lack innate knowledge needed to build the nest which limits the genetic mixing between the species due to hybrid infertility.

7 0
3 years ago
Which is the best definition of a phylogenetic tree? A) a table of classification that is based only on physical characteristics
Ludmilka [50]

Answer: C)a branching chart that depicts evolutionary relationship among organisms

Explanation: Answer: A phylogenetic tree  is a branching diagram or "tree" showing the inferred evolutionary relationships among various biological species or other entities—their phylogeny—based upon similarities and differences in their physical or genetic characteristics

hope it helps :) plus can i get brainliest?

4 0
3 years ago
Pop quiz: alpha helices are stabilized by hydrogen bonds between the carbonyl group of residues i and the amide group of residue
aalyn [17]

Answer:

<em> e) Ala</em>

Explanation:

Alpha helix is a secondary structure of proteins, it is made of 3.6 aminoacids residues per turn, this structure is possible thanks to local hydrogen bonding between C=O and N-h groups. The result is a cylindrical structure with a hydrogen-bonded backbone and the outside studded with side chains.

Glycin has an -H in its side chain, this makes it a too flexible molecule, therefore it's unusual to find them in alpha-helical structures because their presence could cause the helix to deform. Large R-groups can also affect this stability, phenylalanine has a bulky aromatic side group, this discards it as a stabilizer. Serine has a hydrogen bond donor or acceptor as a side chain, due to the proximity to the main chain it competes with the main chain to form NH and CO bonds. Alanine is the most common amino acid in alpha-helix structures because it has a short and no charged R group (unlike arginine that even when it's short it has a charged R-group), this makes it flexible enough to keep the structure stabilized.

Hope you find this information useful! good luck!

6 0
3 years ago
Sexual selection can favor the evolution of elaborate traits that natural selection acts against. How does sexual selection prod
Naily [24]

Answer:

The answer is: Linkage disequilibrium at alleles controlling the sexually selected trait and fitness bind them together evolutionarily.

Explanation:

Indirect selection can be said to operate at one locus resulting in genetic correlation with another locus, which is the main goal in the selection process. During the process of sexual choice, this commonly occurs when one preferred allele diffuses because it is out of balance with other alleles, which are benefited by natural selection or sexual selection.

7 0
3 years ago
Which organism appeared on Earth first?
Liono4ka [1.6K]
Hey your answer will be "branchiopods

4 0
3 years ago
Read 2 more answers
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