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san4es73 [151]
3 years ago
15

Which cross shows both parents having two different alleles for each of two different genes?

Biology
1 answer:
shtirl [24]3 years ago
7 0

Answer:

The correct option is Number 1. AaBb x AaBb

Explanation:

Genes can be described as basic hereditary units. The genes are made up of DNA.

A gene carries two alleles for a particular trait. These alleles are present at the same loci in the homologous chromosomes. If the two alleles are similar then they are termed as homozygous e.g AA, BB. If the alleles for a trait are different then they are termed as heterozygous e.g Aa and Bb.

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Why does diversity increase as height above land increases​
wolverine [178]

Biodiversity rises with altitude initially before falling with height beyond that. Up until it reaches a diversity peak at about 1 300 to 1 800 m.

  • The biodiversity increases at higher geographical locations because There are more hiding locations. They are better for crop growth. They frequently include more than one kind of habitat.
  • As latitude or altitude change, so does biodiversity. As we descend from high to low elevations, the diversity increases (i.e., from poles to equator).
  • While the environment is harsh and plants have a brief growing season in the temperate region, tropical rain forests provide year-round growth-friendly circumstances.
  • This enables the emergence and expansion of several species. On a mountain, there is an initial increase in species diversity after which there is a decline in species variety as you go up in elevation.
  • At higher elevations, temperature drops and seasonal variations increase, which significantly diminishes.

learn more about biodiversity here: brainly.com/question/26110061

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7 0
2 years ago
A certain eukaryotic organism has multiple, distinct genes with highly similar sequences that are expressed at different times i
vlabodo [156]

These genes could have arisen by gene duplication.

<h3>What is gene duplication?</h3>

Gene duplication is the process of copying a section of DNA that codes for a gene. A retro transposition event or a recombination mistake are both potential causes of gene duplication. As a result, the duplicate gene coding may experience a significant number of modifications throughout time. This might prevent the gene from functioning or, in other situations, give the creature a benefit.

Gene duplication is a phenomenon that can happen through a variety of ways:

  • Ectopic Recombination: Uneven crossing-over between misaligned homologous chromosomes during meiosis might result in duplications. A duplication at the exchange site and a reciprocal deletion are the results of this recombination.
  • Replication Slippage: Short genomic sequences can be duplicated as a result of the replication error known as replication slippage. DNA polymerase starts copying the DNA during replication, but eventually the polymerase separates from the DNA, causing replication to stall. The replicating strand is incorrectly aligned when the polymerase reattaches to the DNA strand, which accidentally results in several copies of the same portion.
  • Aneuploidy: When a single chromosome's nondisjunction causes an abnormally high number of chromosomes, this condition is known as aneuploidy. Aneuploidy is frequently damaging and frequently causes spontaneous miscarriages in mammals. Some aneuploid people can survive. For instance, human trisomy 21 causes Down syndrome but is not lethal.

Learn more about gene duplication here:

brainly.com/question/14014915

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3 0
2 years ago
Define Sociobiology ​
Nata [24]
The scientific study of the biological aspects of social behavior in animals or humans! Hope this helped.
7 0
3 years ago
Read 2 more answers
-
umka21 [38]

Answer:

Biodiversity

Explanation:

Biodiversity or also called biological diversity is the variation among life on Earth. It encompasses all life form on Earth including plants, animal, microbes etc.

According to the question, bodiversity is the ultimate source of renewable energy on Earth. It is renewable because life has the ability to reproduce, and the greater the reproduction, the higher the probability tibd

5 0
3 years ago
This is a model of translation in which the genetic code carried on mRNA is used to assemble amino acids into a polypeptide. A c
Vaselesa [24]

In the model, a codon is identified as part of the mRNA strand. A codon is a series of three nucleotides on mRNA that codes for an amino acid.

mRNA

This is one form of RNA that serves as a template for protein synthesis. It is transcribed from DNA and then translated at ribosomes to produce a protein.


7 0
3 years ago
Read 2 more answers
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