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SIZIF [17.4K]
3 years ago
9

Cell Biology

Biology
1 answer:
AnnZ [28]3 years ago
5 0

Answer:

D- crossing over

Explanation:

All the others happen in mitosis.

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Hydrogen bonds can only occur between certain bases.
skad [1K]
A pairs with T (Thymine) 
C Pairs with G (Guanine)
6 0
3 years ago
What will happen to a population of organisms that are in an oxygen rich environment. (Double click the story board to draw on i
Dmitry_Shevchenko [17]

Answer:

it will disolve

Explanation:

6 0
3 years ago
Where is the equator of a cell
Alexxandr [17]

Answer:

Where the cell divides

Explanation:

I think the equator, or equatorial plate, is the midline of the cell where duplicated chromosomes position during mitosis.  

8 0
3 years ago
biologists is studying two species of lizards in a mountainous region. The two species are separated by habitat with one species
ivann1987 [24]

Answer:

Valley lizard = Oviparous

Mountain lizard = Viviparous

Explanation:

In Darwin's theory survival of the fittest, he believed species adapt or change within their environment. So I believe lizards living in a valley would be more safe to lay their eggs but lizards living in the mountains would be viviparous because of the non-predicted and unsafe environment which could harm the better chances of development of the offspring.

5 0
3 years ago
Read 2 more answers
Someone please calculate the ratio of offspring please help pleaseeeeeeeeeeeeeeee
Over [174]

Answer:

2. 1 Pink : 1 white

3. 1 Red : 1 Pink

4. 1 Red : 2 Pink : 1 White

Explanation:

This question involves a single gene coding for flower colour in snapdragon plants. The alleles of the gene exhibits incomplete dominance i.e. the red allele (R) ia not completely dominant over the white allele (W), hence an intermediate pink phenotype (RW) is formed. Based on this, a red snapdragon will have genotype, CRCR while a white one will have genotype, CWCW. The intermediate pink phenotype will have a genotype, CRCW.

The image attached to this question shows four crosses between different traits.

In the second cross between a pink (CRCW) and white offspring (CWCW), 2pink and 2white offsprings will be possibly produced in the ratio 1:1.

In the third cross between a red (CRCR) and pink (CRCW) snapdragon, 2 red and 2 Pink offsprings will possibly be produced in a ratio 1:1.

In the fourth cross between a pink (CRCW) and pink (CRCW) snapdragon, red, pink and white offsprings will be produced in the ratio 1:2:1.

See attached image for the complete punnet square. Note that, there was a mistake in the Genotype of the last cross i.e. pink has genotype CRCW not CWCW.

5 0
3 years ago
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