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ozzi
4 years ago
9

Mosses and ferns differ in their reproductive strategies from gymnosperms and angiosperms in which of the following ways?

Biology
1 answer:
In-s [12.5K]4 years ago
7 0

Answer:

The correct answer will be option-A

Explanation:

The Mosses are the non-vascular plants that were developed from the aquatic plants and the ferns are the vascular plants which developed from the bryophytes.

Their life cycle shows alternation of generation and is largely dependent on the water for reproduction mainly fertilization or fusion of gametes.

The male gametes produced in these plant groups are haploid and are released in water which fuses in water with female gamete which is distinct from the higher plant groups gymnosperms and angiosperms where fertilization is mediated by mostly the wind or insects.

Thus, option-A is the correct answer.

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Identify how the deletion of a single nitrogen base in DNA can cause a harmful mutation in an organism.
ra1l [238]

Answer:

B. Nearly every amino acid translated after the error will create the wrong protein after the deletion of a base.

Explanation:

Generally, mutations occur in two ways: 1) a base replacement, where one base is replaced for another; 2) insertion or deletion, where a base is either incorrectly inserted or deleted from a codon.

When a nucleotide is wrongly inserted or deleted from a codon, the effects of this change can be extreme. An insertion or deletion can affect every codon in a particular genetic sequence.  For example, given the code:

GAU GAC UCC GCU AGG. It is the codes for the amino acids aspartate, aspartate, serine, alanine, and arginine. If the A in the GAU were to be deleted, the code would become GUG ACU CCG UAG G. It won't produce any right amino acid.

So, if the code becomes changes, it won't produce any amino acid or will produce the wrong amnio acid.

8 0
4 years ago
During recombination ________________________.
Sonbull [250]

Answer:

2)chiasmata hold chromosomes together.

Explanation:

Chiasma (pl. Chiasmata): it is the point of contact, the physical union between two non-sister chromatids that belong to homologous chromosomes. In a given chiasma, an exchange of genetic material can occur between both chromatids.

1) is FALSE becasue recombination occurs between chromatids of homologous chromosomes, NOT between sister chromatids.

3) is FALSE because more than one recombination event can occur in a given pair of homologous chromosomes.

4) is FALSE becasue synaptonemal complex keeps homologous chromosomes together, NOT sister chromatids. Additionally, recombination occurs in prophase 1, long before anaphase 2.

8 0
4 years ago
Help me ! <br><br> A) gas <br> B) liquid <br> C) none <br> D) solid
jeka57 [31]
The answer of this question is B: Liquid
4 0
3 years ago
Read 2 more answers
19) what does this mean that “cells turn on different genes”?
nasty-shy [4]
B is your answer all of the above
5 0
3 years ago
8. What resistance would produce a current of 350 amps with a potential difference of 2,500 volts? ​
erastova [34]
Potential difference = Current x Resistance.
Therefore if you transpose the formula, Resistance = Voltage divided by Current.
Which would be 2500 volts divided by 350 amps which gives you 7.1 ohms
3 0
3 years ago
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