Birth defects can be caused by:

Biology

2 answers:

san4es73 [151]3 years ago

7 0

All of the above because many thing can cause birth defects

sp2606 [1]3 years ago

7 0

- - D all of the above

This is because genetic factors, unknown factors, and environmental factors are all things that can be caused by birth defects.

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1. In a population of 200 field mice, 98 mice are homozygous dominant for brown fur (FF), 84 mice are heterozygous (Ff), and 18

iVinArrow [24]

A.
The genotype frequencies can be determined by dividing the number of individuals with a genotype by the total number all the individuals.
FF genotype frequency:
98÷200=0,49. There are approximately 5 homozygous dominant mice in 10.
Ff genotype frequency:
84÷200=0,42. There are approximately 4 heterozygous mice in 10.
ff genotype frequency:
18÷200=0,09. There are approximately 1 homozygous recessive mouse in 10.

B.
To determine the frequency of an allele we can divide the number of times that the allele appears by the total number of alleles.
F allele frequency:
 $\frac{(98*2)+84}{400}$ =0.7
There are 7 F alleles in 10 random alleles.
f allele frequency:
$\frac{84+(18*2)}{400}$ =0.3
There are 3 f alleles in 10 random alleles.

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3 years ago

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astra-53 [7]

An increase in human population negatively impacts the water resources. There is only a small amount of clean and drinkable water on Earth. If more people are on Earth, more of this water will be used by the population. An increase of people also means that more fossil fuel will be used.

<h3>How does human population impact water resources?</h3>

Population growth especially will limit the amount of water available per person, because an increase in per capita water consumption driven by development will intensify water demand, straining the local water supply.

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Which issue(s) followed Chernobyl's nuclear meltdown? Select all that apply. *

Ronch [10]

All of the above are correct.

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2 years ago

Write a hypothesis about pH level on common household solutions based on physical and chemical properties.

Irina18 [472]

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Explanation:

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Blababa [14]

Answer:

a. histones. is the correct answer.

Explanation:

In a nucleosome, the DNA is wrapped around eight histones proteins to create strong loops termed nucleosome.

A nucleosome is the structural subunit of the chromatin.

Chromatin is a fiber polymer of double-stranded DNA which is composed up of a nucleosome core. The nucleosome core is made of histone proteins

Each nucleosome is composed of DNA enclosed around eight histone proteins which are called histone octamer.

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3 years ago