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beks73 [17]
3 years ago
10

CV 7 Raja wanted to investigate how the amount of light affects the growth of a type of plant. The diagram below shows each of h

is set-ups in a clear glass tank. glass tank covered glass tank covered light with tracing paper light with black paper my 4 living plants soil Which of the following could be used as a control for his experiment? (1) light glass tank covered with black paper exactly the same but without the CV soil​
Biology
1 answer:
Alexandra [31]3 years ago
7 0

Answer:

Using the sentence in learning task 7 identify the type of context clues used in each item​

Explanation:

Using the sentence in learning task 7 identify the type of context clues used in each item​

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Which stage of the cell cycle immediately precedes the s phase?
VladimirAG [237]
The G2 phase of interphase begins here.
7 0
4 years ago
A new kind of tulip is produced that develops only purple or pink flowers. Assume that flower color is controlled by a single-ge
Sophie [7]

Answer:

a. purple allele (C) = 0.609, pink allele (c) = 0.391

b. purple homozygotes = 371, pink homozygotes = 153, heterozygotes = 476

Explanation:

Given -

Purple flowers - 847

Pink flowers - 153

The frequency of recessive genotype i.e

q^ 2 = \frac{153}{1000} \\q^ 2 = 0.153\\

Frequency of recessive allele i.e q is equal to

q = \sqrt{0.153} \\q = 0.391

As per hardy Weinberg's first equilibrium equation -

p + q = 1\\p = 1-q\\p = 1-0.391\\p = 0.609

Frequency of purple homozygous species

= p^2\\= 0.609^2\\= 0.371

Number of purple homozygous species = 0.371 * 1000= 371

Number of pink homozygous species = 0.153 * 1000= 153

Heterozygous species is equal to

(1-0.371-0.153)* 1000\\= 0.476 * 1000\\= 476

5 0
3 years ago
Read 2 more answers
Which of the following is an example of selective breeding?
WARRIOR [948]

Answer:

b

Explanation:

they chose the best tomatoes to make even better ones

6 0
3 years ago
This membrane mimics the __________________ that is around animal cells. In order to explore how water moves in and out of a cel
Olenka [21]

This membrane mimics the plasma membrane that is around animal cells. In order to explore how water moves in and out of a cell, one cell was weighed and then submerged in hypertonic solution. The other egg was weighted and submerged in hypotonic solution. It was predicted that the egg submerged in hypertonic solution  would decrease in mass. It was predicted that the egg submerged in hypotonic solution would increase in mass.

Explanation:

The outermost covering of an animal cell is the plasma membrane. It is a selectively permeable membrane that allows only selective molecules to pass through it.

A solution having higher concentration of solute than the cell cytoplasm is called a hypertonic solution.

A solution having lower concentration of solute than the cell cytoplasm is called the  hypotonic solution.

The movement of water molecules from the region of its higher concentration to the region of its lower concentration through a semipermeable membrane is called osmosis.

A cell placed in hypertonic solution will undergo exosmosis so it will lose water and its mass will decrease.

A cell placed in hypotonic solution  will undergo endosmosis of water  so it will gain water and its mass will increase.

8 0
4 years ago
which enzyme is responsible for transcribing a gene on a DNA strand into an RNA molecule during transcription ​
lana [24]
MRNA does the transcription I believe
5 0
3 years ago
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