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mart [117]
3 years ago
12

The earliest routine prenatal test is a first-trimester screen, which is usually done in the 11th to 13th week of pregnancy. it

includes a blood test and _____.
Biology
1 answer:
mash [69]3 years ago
4 0
A Outré sound might be the answer
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I need help on this Asap. i also need an explanation to go with the answer.
Anna35 [415]

Answer:

For question 20. I believe the answer is C. There would be more iguanas with webbed feet.

Explanation:

It states the iguanas have adapted to different habitats on the island. The iguanas that have webbed feet will be better at getting food in water, but slower on land. So if the land starts to disappear and turns into more water, the iguanas with webbed feet will have a higher chance of survival. Meaning the iguanas with out webbed feet will die out as a population.

5 0
2 years ago
Explain how a paleontologist might use relative dating techniques to determine the age of a fossil.
Serggg [28]
As far as I know, radioactive dating is the measure of radioactive substances in a fossil or something. Like the fossils have a radioactive substance in them, it is the only thing that can show how long the fossils been aging, therefore being able to show the date. And thats how radioactive dating works, and that is how a paleontologist uses it
4 0
2 years ago
What is the difference between heterozygous and homozygous individuals? What is the difference between heterozygous and homozygo
Anuta_ua [19.1K]

Answer:

All of the gametes from a homozygote carry the same version of the gene while those of a heterozygote will differ.

Explanation:

A heterozygous individual carries both dominant and recessive alleles of a gene while a homozygous individual carries two copies of either dominant or recessive alleles of a gene. For example, the genotype TT and tt have two copies of dominant and recessive alleles respectively and are therefore homozygous genotypes. On the other hand, the genotype "Tt" is a heterozygous genotype.

An individual with a homozygous genotype would produce all the gametes having the same allele of the gene. The homozygous genotype "TT" would produce all the gametes with one copy of the "T" allele. An individual with a heterozygous genotype makes two types of gametes. The genotype "Tt" would produce 50% gametes having a "T" allele and rest 50% having a "t" allele. Segregation of alleles during meiosis produces different types of gametes in a heterozygous Individual.

4 0
3 years ago
Heterogeneous mixture<br> a. vinegar<br> b. air<br> c. chunky peanut butter
viktelen [127]

<span>
The best answer is C.</span>A heterogeneous mixture consists of two or more materials that have been physically combined but are unevenly mixed and can easily be identified from each other.

 Chunky peanut butter is an uneven mix of peanuts and other food products.  Bits of peanuts can easily be identified from the rest of the butter.<span> </span>

<span />Other examples are :

1. mixture of sand and iron filings.2. Mixture of gold and silver powder.<span>3. Vegetable or fruit  salad.</span>4. Mixture of sand and water.5. Mixture of oil and water.6. Mixture of sand and fine gravel

4 0
3 years ago
Which of the following is used to treat a fungal infection?
Verizon [17]
D. fungal infection cannot be treated :)
8 0
3 years ago
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