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Nataliya [291]
3 years ago
15

A worm would stand a poor chance of being fossilized because ________. A worm would stand a poor chance of being fossilized beca

use ________. worms live in the shallow ocean worms contain no carbon-14 worms have no hard parts worms were very rare during the geologic past
Biology
1 answer:
max2010maxim [7]3 years ago
7 0

Answer: worms have no hard parts

Explanation:

A fossil is a hard remain of the dead being which used to live on earth. It may belong to plant, animal or any other creature who used to have hard body parts such as teeth, bones, shells, wooden parts and others. As when the organism dies the soft body parts are decomposed off and only hard parts are left. These hard parts are preserved under the heap of earth in the sedimentary rocks as fossil.

The worms usually have soft body parts which can be easily decomposed off by the soil microbes after death. Hence, they cannot be preserved as fossils.

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All else being equal and assuming logistic population growth, fishing efforts should __________ in order to maintain the highest
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What word is used to describe knowledge about the universe and the method of obtaining that knowledge?
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True or False: Species diversity hurts ecological succession?
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7 0
3 years ago
Read 2 more answers
In humans, aniridia, a type of blindness, is due to a dominant allele A. Migraine headaches are due to another dominant allele M
leonid [27]

Answer:

9/16

Explanation:

This is a typical dihybrid cross involving two genes; one coding for anridia (form of blindness) and the other for Migraine headache, both in humans. The allele for possessing anridia (A) is dominant over the allele for not possessing it (a) in the first gene, while the allele for having Migraine headache (M) is dominant over the allele for not having it (m) in the second gene.

A cross between a man that is heterozygous for both genes (AaMm) and a woman also heterozygous for the two genes (AaMm), this means that both parents are dominant for the two traits i.e. they both possess anridia and migraine headache.

Both parent cells will undergo meiosis to produce four possible combination of gametes in which the alleles are independent of one another in the gametes, according to Mendel's law of independent assortment. The gametes are: AM, Am, aM, am

These gametes are crossed using a punnet square (see attached image) to produce 16 possible offsprings in a phenotypic ratio of 9:3:3:1.

9- Offsprings with both anridia and migraine

3- Offsprings with only anridia but without migraine

3- Offsprings with only migraine but without anridia

1- Offsprings without both anridia and migraine

According to the question, the chance of an offspring expressing both traits i.e. having both anridia and migraine headache is 9/16

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3 years ago
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