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Novosadov [1.4K]
3 years ago
8

Which of the following would you expect to contain cells with the same number of chromsomes as an egg cell in a plant? (Pick all

the correct answers- there may be more than one!)
A. GametophyteB. SporophyteC. SporeD. Sperm
Biology
1 answer:
marissa [1.9K]3 years ago
8 0

Answer:

The correct answer is option -  A. Gametophyte, C. spore, and D. sperm.

Explanation:

The egg cell of a plant is haploid in the cell which means it has only one set of chromosomes. The haploid cells arise from the meiosis cell division in parent sex cells. These parent cells are divided into four cells with half of the chromosome number in comparison to the parent cells.

The gametophyte, spore, and sperm all three are the product of the meiosis division and are haploid in number.

Thus, the correct answer is option - A, gametophyte, C. spore and D. sperm.

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Defensive chemicals are usually found in unripe fruit but not in ripe fruit. In terms of coevolution, why might this be?
vichka [17]
The basic reason why unripe fruits have defensive chemicals is that they need to protect the seeds that are not ready to germinate. On the other hand, the seeds of the ripe fruits are ready to germinate and so they need to get spread with the help of animals and birds and so there are no defensive chemicals. These seeds spread to different places and the soils help them to germinate under suitable conditions.
5 0
4 years ago
On study island i have a question and im only typing this to get the amount of characters needed
Fudgin [204]

Fault is a break or fracture in a block of a rock.

<u>Explanation:</u>

A fault is a term which is used in the subject Geology. A fault is a fracture or break in the continuity in a rock which result in the change in the place of the rock.

Fault can be one fracture or a number of fractures or breaks between the blocks of the rocks. Because of these breaks and faults, the blocks of the rocks to move against each other or move relative to each other.

6 0
3 years ago
In DNA replication in bacteria, the enzyme DNA polymerase III (abbreviated DNA pol III) adds nucleotides to a template strand of
earnstyle [38]

Answer:

In which image will adenine (A) be the next nucleotide to be added to the primer?

T, CG, GC, CG, A

**In the example above, DNA pol III would add an adenine nucleotide to the 3' end of the primer, where the template strand has thymine as the next available base. You can tell which end is the 3' end by the presence of a hydroxyl (-OH) group.

The structure of DNA polymerase III is such that it can only add new nucleotides to the 3' end of a primer or growing DNA strand (as shown here). This is because the phosphate group at the 5' end of the new strand and the 3' -OH group on the nucleoside triphosphate will not both fit in the active site of the polymerase.

Explanation:

8 0
3 years ago
As discussed previously, the ABO locus in humans has three alleles, where IAand IBare co-dominant and i is recessive to each. Su
Ivahew [28]

Answer:

Explanation:

using the formula p² + 2pq + 2pr + q²+ 2qr + r² = 1 where p is IA allele is 0.35 and q is IB allele is 0.15.

Thus, the expected frequency of people with type AB blood in this population will be (2pq) = 2 x 0.35 x 0.15 = 0.105

b. The expected frequency of people with type A blood will be p² + 2pr = where r is found using the formular p + q + r = 1 = 1 - (p+q) = 1 - (0.35+0.15) = 0.5

Thus, we have the expected frequency of people with type A blood to be     (0.35² + 2x0.35x0.5) = 0.4725.

c.    <u> p² + 2pr</u> + <u>2pq </u>+ <u>q² + 2qr</u> +<u> r²</u>

       AA AO      AB      BB BO     OO

         1850       180        635      2335

frequency of IA- p = (1850 + 180/2) / 5000 = 0.388

frequency of IB- q = (635 + 180/2) / 5000 = 0.145

frequency of i- r = 2335/ 5000 = 0.467.

since r² = 2335, r = √2335 = 48.32

using the formula p + q + r = 1

4 0
3 years ago
Which geological era is known as the age of reptiles?
Afina-wow [57]
B. Mesozoic

The Mesozoic Era is commonly referred to as the Age of Reptiles or the Age of Dinosaurs.
5 0
3 years ago
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