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balu736 [363]
3 years ago
9

What is the tool used to predict the outcome of genetic crosses

Biology
1 answer:
Alenkasestr [34]3 years ago
8 0
A punnet square is the tool used to predict the outcome of genetic crosses.
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What is the term for term for existing in or produced by the sea ?
Vladimir [108]

Answer:

See synonyms for: marine / marines on Thesaurus.com. Elementary Level. adjective. of or relating to the sea; existing in or produced by the sea: marine vegetation. pertaining to navigation or shipping; nautical; naval; maritime.

4 0
2 years ago
Which of the following occurs during mitosis but
marissa [1.9K]

Answer:

B) The chromatids of each chromosome are separated.

3 0
2 years ago
Which of the following represents a type II survivorship curve?
Step2247 [10]

Answer:

The correct answer will be option-C.

Explanation:

The survivorship curves are the representation of the proportion of individuals of the given species which are alive at different ages in the population of species.  The curves are represented in the form of a graph with the number of individuals plotted on the y-axis to the age of survivorship on the x-axis.

The survivorship curves are of three types: Type I, II and III out of which type three represents the population with equal probability of dying at all age groups. This is represented by a straight line on the graph.

Thus, Option-c is the correct answer.

7 0
3 years ago
A couple planning their family are aware that through the past three generations on the husband's side a substantial number of s
Nesterboy [21]

Answer:

a) There are lots of genes on chromosome 1 could be affected, and the gametes could be imbalanced (missing segments of DNA or whole chromosomes)

b) Roughly 50%

c) No. I would advise that the couple undergo preimplantation genetic diagnosis, so that a zygote carrying the normal copy of chromosome 1 could be selected.

Explanation:

Chromosome 1 is one of the largest and most gene rich chromosomes. An inversion that covers 70% of its length would cover lots of genes.

While an inversion on its own would not seem problematic (as all the genes on the chromosome are still there), when it comes to meiosis, the sister chromatids would not be able to correctly align, and crossing over would further complicate this. It could also lead to unbalanced gametes missing entire parts of the chromosome. Therefore, there are likely numerous genes that will be affected and messed up by the inversion.

This could explain the high incidence of past still births, as if lots of genes are affected, and non-functional, the pregnancy would be rendered non-viable, or highly deleterious causing premature death.

b) There is a 50% chance of a child inheriting the defective copy of chromosome 1 (and 50% of a chance of them inheriting the normal chromosome 1. Therefore, there is likely a 50% chance that future offspring would be affected by defects

c) No. I would advise that the couple undergo preimplantation genetic diagnosis. In this, the couple undergoes in vitro fertilization (IVF). When embryos are produced through IVF, they can then be tested for the presence of the abnormal chromosome. Embryos will only be implanted into the mother if the normal chromosome 1 is present.

6 0
3 years ago
In a car, how does an air bag minimize the force acting on a person during a collision?
yaroslaw [1]
Due to the laws of motion the airbag causes force in the other direction while the person is moving forward, thus trying to equal out the force acting apon the person to make them stay in place.
5 0
3 years ago
Read 2 more answers
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