All categories

3 years ago

In corn, a dihybrid for the recessives a and b is

1 answer:

7 0

In case of the genes that assort independently in a test cross, the phenotypic ratio is 1: 1: 1: 1. In the given case, the total number of phenotypes is 400, thus, every phenotype should be 100 each. Since that is not the case, it may be concluded that the genes are not assorting independently.

Thus, to determine the chi-square = (observed-expected)^2 / expected.

By putting the values, we get the values of chi-square as

AB = 4.84

Ab = 3.24

aB = 3.61

ab = 4.41

Thus, the chi-square value will be the addition of the individual values that comes out to be 16.1. Here there are three degrees of freedom (Number of classes-1). Observing at the P table, this puts the value of P < 0.005.

A large chi-square value suggests that independent assortment actually did not occur as the expected and the observed values were very distinct.

You might be interested in

please someone help in the metric system, what do kilogram, kilometer, and kilocalorie have in common?

jekas [21]

Answer:

<h2>1.6 Kilometre is about 1 mile.</h2>

<h2>1 metre is about 3 inches longer than one yard.</h2>

<h2>1 kilogram is a little more than 2 pounds</h2>

<h2>28 grams is about the same as one ounce.</h2>

<h2>Ask me for further explanation</h2>

3 0

2 years ago

How does

Bess [88]

Answer: Testable Question

Explanation:

testable questions are always about

changing one variable to see what the

effect is on another variable.

Can be answered through that involve experiments, , or surveys , investigations , observations

<h2>DONT FORGET TO MAKE ME BRAINILIST</h2>

8 0

3 years ago

What element is necessary for the production of thyroid hormone?

liubo4ka [24]

Answer:

Iodine

Explanation:

This is a trace element needed for the synthesis of the two thyroid hormone ; T4- thyroxine and T3-triiodothyronine. Four iodine molecules are added in T4 synthesis, and three for T3 synthesis. Generally T4 is the major hormone produced, but biologically transformed into active form T3.

Iodine majorly and selenium are the two trace elements needed for thyroid hormones synthesis. Therefore required amount of iodine is important in daily diet. iIn adequate supply of this leads to under production of iodine called hypothyroidism. poor brain development ( especially in kids),and goiter.

Sea foods . eggs, poultry seaweeds are rich sources of iodine.

Conversely, when excessive amount is present in the blood, autoimmune thyroid diseases can occur,including cancer developments in the thyroid gland due to hyper cell activities.

8 0

3 years ago

What did Mendel conclude about inherited traits?

Illusion [34]

Answer:

B) Two factors control each inherited trait

3 0

2 years ago

Read 2 more answers

Explain how the alleles were passed from parents to offspring. I DONE ) Intro

gtnhenbr [62]

answer is the first1 off spring to parants