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Ipatiy [6.2K]
3 years ago
6

What occurs during the gametophyte stage?

Biology
2 answers:
tresset_1 [31]3 years ago
8 0

Answer:

its the sexual stage for plants

max2010maxim [7]3 years ago
7 0

Answer:

In the gametophyte phase, which is haploid (having a single set of chromosomes), male and female organs (gametangia) develop and produce eggs and sperm (gametes) through simple mitosis for sexual reproduction. ... When the spore wall cracks under appropriate moist conditions, the fern gametophyte is formed.

Explanation:

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Cross-cultural research on human development indicates that
ELEN [110]

Answer:

Explanation: IT should be B

7 0
3 years ago
Which structure secretes digestive enzymes that break down carbohydrates, fats, and proteins? A. Pancreas B. Large intestine C.
Ivahew [28]
<span>Which structure secretes digestive enzymes that break down carbohydrates, fats, and proteins? A. Pancreas

Most of the enzyme in the intestinal system is made by pancreas. Pancreas will also secrete insulin to make cell utilize glucose. The Large intestine is absorbing water. Salivary glands mostly digest carbohydrate.</span>
6 0
3 years ago
What is true about the lagging strand during DNA replication?
BlackZzzverrR [31]

There are not only one but two correct option, which are A and B.

DNA polymerases begin their synthesis at many points of initiation. Following the binding of specific proteins, the double helix opens to allow startup.


DNA synthesis begins on RNA / DNA primers consisting of primase and DNA polymerase a. The replication continues in one direction: in this sense one of the two strands of the DNA ("direct" strand) is traversed by the enzyme in the 3 '→ 5' direction, which allows the synthesis of another strand in the direction 5 '→ 3'. The DNA-ligases then provide the link between the different fragments of the new DNA.


The synthesis of the other strand ("delayed" strand) is more complex because the enzyme travels this strand from 5 '→ 3'. The primase and DNA polymerase α synthesize 30 nucleotide primers in front of the replication zone, and the DNA polymerase constructs small DNA fragments in the 5 '→ 3' direction (approximately 200 nucleotides; Okazaki). Ribonucleases destroy the RNA / DNA primers of the previous fragment and the fragments are then linked together by DNA ligase.

3 0
3 years ago
In cocker spaniels, solid color (A) is dominant over spotted (a), and black coat color (B) is dominant over red (b). If two soli
andrezito [222]

Answer:

<h2>A</h2>

Explanation:

As given;

Solid color is dominant on  spotted color,  

so A is dominant on a.

black coat color (B) is dominant on red (b) color

so B is dominant over b.

cross between two solid black dogs several times and their offspring were 18 solid black and 5 spotted black puppies. so the parents will be Аа Bb x AA Вb, due to the effect of dominant.

7 0
3 years ago
In science a hypothesis is useful only if it can be
Evgen [1.6K]

Answer:

In science a hypothesis is useful only if it can be <u><em>tested</em></u>.

Explanation:

In a scientific experiment, a hypothesis can be described as a tentative experiment that can be tested through observations and experimentation. The results inferred from the experiments can prove whether a hypothesis was correct or wrong. Hence, a hypothesis is a very important part for the scientific method of research. The validation of a hypothesis through experimentation brings about theories, facts, laws etc. A hypothesis is made in response to a scientific question.

7 0
3 years ago
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