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3 years ago

How is the formation of of gametes in males similar to the formation of gametes in females

1 answer:

ioda3 years ago

8 0

Gametes are the cells used during sexual reproduction to produce a new individual organism or zygote. The male gamete, sperm, is a smaller, mobile cell that meets up with the much larger and less mobile female gamete, egg or ova. Both sperm and egg are only haploid cells. They only carry half of the chromosomes needed.

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Examples of skin receptors

GenaCL600 [577]

Cutaneous receptor. The cutaneous receptors are the types of sensory receptor found in the dermis or epidermis. They are a part of the somatosensory system.Cutaneous receptors include cutaneous mechanoreceptors, nociceptors (pain) and thermoreceptors (temperature).

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3 years ago

Read 2 more answers

5. Explain how selection might be different if there were brown grasshoppers in

Semenov [28]

Answer:

Explanation:

Selection breeding is use to identify individual with good physical characteristics that can be used as parent in next generation. Brown, yellow, green grasshoppers are the distinct phenotypic characteristics of an individual hence selection will be individual base. Such that brown individual will be selected, green selected seperated and yellow will also selected. The organism that shows the best fits are often been selected depending on the objects of the selection

7 0

3 years ago

Which type of seismic wave does not move through liquid material?

matrenka [14]

P waves do not move through liquid material

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3 years ago

When pink sweet peas were self-pollinated and the seeds were collected and sown, the following flower colors were obtained: Red

Pavlova-9 [17]

Answer:

c. 1:2:1

The results are consistent with incomplete dominance for this trait, with pink flowers being heterozygous.

Explanation:

If flower color were determined by a gene showing incomplete dominance, the possible genotypes and phenotypes are as follows:

RR- red
ww - white
Rw - pink

If pink sweet peas are self-pollinated, then a cross between two heterozygous individuals is done (Rw x Rw).

From this cross the expected ratios are:

1/4 RR (red)
2/4 Rw (pink)
1/4 ww (white)

So the null hypothesis is that the observed results exhibit a 1:2:1 ratio.

<h3>Chi square test</h3>

$X^{2} = \sum \frac{(Observed - Expected)^2}{Expected}$

The observed frequencies were:

34 Red
76 Pink
40 White

Total 150

The expected frequencies for our null hypothesis are:

1/4 x 150 = 37.5 Red
2/4 x 150 = 75 Pink
1/4 x 150 = 37.5 white

$X^{2} = \frac{(34- 37.5)^2}{37.5} + \frac{(76- 75)^2}{75} + \frac{(40- 37.5)^2}{37.5}$

$X^2=0.5067$

The degrees of freedom (DF) are calculated as number of phenotypes - 1; in this case DF = 3-1 = 2.

If we look at the Chi square table, for 2 DF and a probability of p0.05, the critical value is 5.991

Our X^2 value of 0.5067 is less than the critical value, so we do not reject the null hypothesis. The results are consistent with incomplete dominance for this trait, with pink flowers being heterozygous.

8 0

3 years ago

Plz help asap 5 = p/4

Jlenok [28]

Answer:

p = 20

Explanation:

to get p alone you have to do the oposite of what your doing with p

ex) its being divided so you would have to multiply both sides by 4 to get p alone

p = 5x4

5 0

3 years ago

Read 2 more answers